include/linux/mdio.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
The static inline functions mdio45_ethtool_gset() and
mdio45_ethtool_ksettings_get() call mdio45_ethtool_gset_npage() and
mdio45_ethtool_ksettings_get_npage() which are both guarded by
CONFIG_MDIO. So let's only expose mdio45_ethtool_gset() and
mdio45_ethtool_ksettings_get() if CONFIG_MDIO is defined.
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
include/linux/mdio.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index efeca5bd7600b..558311d9d7cad 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -165,11 +165,13 @@ extern int mdio_set_flag(const struct mdio_if_info *mdio,
bool sense);
extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds);
extern int mdio45_nway_restart(const struct mdio_if_info *mdio);
+
+#ifdef CONFIG_MDIO
extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
struct ethtool_cmd *ecmd,
u32 npage_adv, u32 npage_lpa);
-extern void
-mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
+
+extern void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
struct ethtool_link_ksettings *cmd,
u32 npage_adv, u32 npage_lpa);
@@ -205,6 +207,7 @@ mdio45_ethtool_ksettings_get(const struct mdio_if_info *mdio,
{
mdio45_ethtool_ksettings_get_npage(mdio, cmd, 0, 0);
}
+#endif
extern int mdio_mii_ioctl(const struct mdio_if_info *mdio,
struct mii_ioctl_data *mii_data, int cmd);
--
2.47.0Hi Alistair,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on horms-ipvs/master v6.12-rc6 next-20241104]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Alistair-Francis/include-mdio-Guard-inline-function-with-CONFIG_MDIO/20241104-151211
base: linus/master
patch link: https://lore.kernel.org/r/20241104070950.502719-1-alistair.francis%40wdc.com
patch subject: [PATCH] include: mdio: Guard inline function with CONFIG_MDIO
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20241105/202411050638.SOJYVz2a-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 639a7ac648f1e50ccd2556e17d401c04f9cce625)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241105/202411050638.SOJYVz2a-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411050638.SOJYVz2a-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from drivers/net/mdio.c:10:
In file included from include/linux/ethtool.h:18:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:10:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/net/mdio.c:10:
In file included from include/linux/ethtool.h:18:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/net/mdio.c:10:
In file included from include/linux/ethtool.h:18:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/net/mdio.c:10:
In file included from include/linux/ethtool.h:18:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/net/mdio.c:183:6: warning: no previous prototype for function 'mdio45_ethtool_gset_npage' [-Wmissing-prototypes]
183 | void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
| ^
drivers/net/mdio.c:183:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
183 | void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
| ^
| static
>> drivers/net/mdio.c:355:6: warning: no previous prototype for function 'mdio45_ethtool_ksettings_get_npage' [-Wmissing-prototypes]
355 | void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
| ^
drivers/net/mdio.c:355:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
355 | void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
| ^
| static
18 warnings generated.
--
In file included from drivers/net/ethernet/sfc/falcon/net_driver.h:13:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:10:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/net/ethernet/sfc/falcon/qt202x_phy.c:13:
In file included from drivers/net/ethernet/sfc/falcon/efx.h:11:
In file included from drivers/net/ethernet/sfc/falcon/net_driver.h:13:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/net/ethernet/sfc/falcon/qt202x_phy.c:13:
In file included from drivers/net/ethernet/sfc/falcon/efx.h:11:
In file included from drivers/net/ethernet/sfc/falcon/net_driver.h:13:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/net/ethernet/sfc/falcon/qt202x_phy.c:13:
In file included from drivers/net/ethernet/sfc/falcon/efx.h:11:
In file included from drivers/net/ethernet/sfc/falcon/net_driver.h:13:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/net/ethernet/sfc/falcon/qt202x_phy.c:440:2: error: call to undeclared function 'mdio45_ethtool_ksettings_get'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
440 | mdio45_ethtool_ksettings_get(&efx->mdio, cmd);
| ^
16 warnings and 1 error generated.
--
In file included from drivers/net/ethernet/sfc/falcon/tenxpress.c:8:
In file included from include/linux/rtnetlink.h:7:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:10:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/net/ethernet/sfc/falcon/tenxpress.c:8:
In file included from include/linux/rtnetlink.h:7:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/net/ethernet/sfc/falcon/tenxpress.c:8:
In file included from include/linux/rtnetlink.h:7:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/net/ethernet/sfc/falcon/tenxpress.c:8:
In file included from include/linux/rtnetlink.h:7:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:95:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/net/ethernet/sfc/falcon/tenxpress.c:453:2: error: call to undeclared function 'mdio45_ethtool_ksettings_get_npage'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
453 | mdio45_ethtool_ksettings_get_npage(&efx->mdio, cmd, adv, lpa);
| ^
16 warnings and 1 error generated.
..
vim +/mdio45_ethtool_ksettings_get +440 drivers/net/ethernet/sfc/falcon/qt202x_phy.c
8ceee660aacb29 drivers/net/sfc/xfp_phy.c Ben Hutchings 2008-04-27 436
e938ed150f1ed9 drivers/net/ethernet/sfc/falcon/qt202x_phy.c Philippe Reynes 2017-01-01 437 static void qt202x_phy_get_link_ksettings(struct ef4_nic *efx,
e938ed150f1ed9 drivers/net/ethernet/sfc/falcon/qt202x_phy.c Philippe Reynes 2017-01-01 438 struct ethtool_link_ksettings *cmd)
68e7f45e118f98 drivers/net/sfc/xfp_phy.c Ben Hutchings 2009-04-29 439 {
e938ed150f1ed9 drivers/net/ethernet/sfc/falcon/qt202x_phy.c Philippe Reynes 2017-01-01 @440 mdio45_ethtool_ksettings_get(&efx->mdio, cmd);
68e7f45e118f98 drivers/net/sfc/xfp_phy.c Ben Hutchings 2009-04-29 441 }
8ceee660aacb29 drivers/net/sfc/xfp_phy.c Ben Hutchings 2008-04-27 442
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Alistair,
kernel test robot noticed the following build warnings:
[auto build test WARNING on linus/master]
[also build test WARNING on horms-ipvs/master v6.12-rc6 next-20241104]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Alistair-Francis/include-mdio-Guard-inline-function-with-CONFIG_MDIO/20241104-151211
base: linus/master
patch link: https://lore.kernel.org/r/20241104070950.502719-1-alistair.francis%40wdc.com
patch subject: [PATCH] include: mdio: Guard inline function with CONFIG_MDIO
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20241104/202411042118.dhgElzHF-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241104/202411042118.dhgElzHF-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411042118.dhgElzHF-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/net/mdio.c:183:6: warning: no previous prototype for 'mdio45_ethtool_gset_npage' [-Wmissing-prototypes]
183 | void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/net/mdio.c:355:6: warning: no previous prototype for 'mdio45_ethtool_ksettings_get_npage' [-Wmissing-prototypes]
355 | void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/mdio45_ethtool_gset_npage +183 drivers/net/mdio.c
1b1c2e95103ce3 Ben Hutchings 2009-04-29 168
1b1c2e95103ce3 Ben Hutchings 2009-04-29 169 /**
1b1c2e95103ce3 Ben Hutchings 2009-04-29 170 * mdio45_ethtool_gset_npage - get settings for ETHTOOL_GSET
1b1c2e95103ce3 Ben Hutchings 2009-04-29 171 * @mdio: MDIO interface
1b1c2e95103ce3 Ben Hutchings 2009-04-29 172 * @ecmd: Ethtool request structure
1b1c2e95103ce3 Ben Hutchings 2009-04-29 173 * @npage_adv: Modes currently advertised on next pages
1b1c2e95103ce3 Ben Hutchings 2009-04-29 174 * @npage_lpa: Modes advertised by link partner on next pages
1b1c2e95103ce3 Ben Hutchings 2009-04-29 175 *
8ae6daca85c8bb David Decotigny 2011-04-27 176 * The @ecmd parameter is expected to have been cleared before calling
8ae6daca85c8bb David Decotigny 2011-04-27 177 * mdio45_ethtool_gset_npage().
8ae6daca85c8bb David Decotigny 2011-04-27 178 *
1b1c2e95103ce3 Ben Hutchings 2009-04-29 179 * Since the CSRs for auto-negotiation using next pages are not fully
1b1c2e95103ce3 Ben Hutchings 2009-04-29 180 * standardised, this function does not attempt to decode them. The
1b1c2e95103ce3 Ben Hutchings 2009-04-29 181 * caller must pass them in.
1b1c2e95103ce3 Ben Hutchings 2009-04-29 182 */
1b1c2e95103ce3 Ben Hutchings 2009-04-29 @183 void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
1b1c2e95103ce3 Ben Hutchings 2009-04-29 184 struct ethtool_cmd *ecmd,
1b1c2e95103ce3 Ben Hutchings 2009-04-29 185 u32 npage_adv, u32 npage_lpa)
1b1c2e95103ce3 Ben Hutchings 2009-04-29 186 {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 187 int reg;
707394972093e2 David Decotigny 2011-04-27 188 u32 speed;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 189
9c4df53bc3f9c7 Ben Hutchings 2012-02-29 190 BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22);
9c4df53bc3f9c7 Ben Hutchings 2012-02-29 191 BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45);
9c4df53bc3f9c7 Ben Hutchings 2012-02-29 192
1b1c2e95103ce3 Ben Hutchings 2009-04-29 193 ecmd->transceiver = XCVR_INTERNAL;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 194 ecmd->phy_address = mdio->prtad;
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 195 ecmd->mdio_support =
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 196 mdio->mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 197
1b1c2e95103ce3 Ben Hutchings 2009-04-29 198 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
1b1c2e95103ce3 Ben Hutchings 2009-04-29 199 MDIO_CTRL2);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 200 switch (reg & MDIO_PMA_CTRL2_TYPE) {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 201 case MDIO_PMA_CTRL2_10GBT:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 202 case MDIO_PMA_CTRL2_1000BT:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 203 case MDIO_PMA_CTRL2_100BTX:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 204 case MDIO_PMA_CTRL2_10BT:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 205 ecmd->port = PORT_TP;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 206 ecmd->supported = SUPPORTED_TP;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 207 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
1b1c2e95103ce3 Ben Hutchings 2009-04-29 208 MDIO_SPEED);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 209 if (reg & MDIO_SPEED_10G)
1b1c2e95103ce3 Ben Hutchings 2009-04-29 210 ecmd->supported |= SUPPORTED_10000baseT_Full;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 211 if (reg & MDIO_PMA_SPEED_1000)
1b1c2e95103ce3 Ben Hutchings 2009-04-29 212 ecmd->supported |= (SUPPORTED_1000baseT_Full |
1b1c2e95103ce3 Ben Hutchings 2009-04-29 213 SUPPORTED_1000baseT_Half);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 214 if (reg & MDIO_PMA_SPEED_100)
1b1c2e95103ce3 Ben Hutchings 2009-04-29 215 ecmd->supported |= (SUPPORTED_100baseT_Full |
1b1c2e95103ce3 Ben Hutchings 2009-04-29 216 SUPPORTED_100baseT_Half);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 217 if (reg & MDIO_PMA_SPEED_10)
1b1c2e95103ce3 Ben Hutchings 2009-04-29 218 ecmd->supported |= (SUPPORTED_10baseT_Full |
1b1c2e95103ce3 Ben Hutchings 2009-04-29 219 SUPPORTED_10baseT_Half);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 220 ecmd->advertising = ADVERTISED_TP;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 221 break;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 222
1b1c2e95103ce3 Ben Hutchings 2009-04-29 223 case MDIO_PMA_CTRL2_10GBCX4:
894b19a6b343ce Ben Hutchings 2009-04-29 224 ecmd->port = PORT_OTHER;
894b19a6b343ce Ben Hutchings 2009-04-29 225 ecmd->supported = 0;
894b19a6b343ce Ben Hutchings 2009-04-29 226 ecmd->advertising = 0;
894b19a6b343ce Ben Hutchings 2009-04-29 227 break;
894b19a6b343ce Ben Hutchings 2009-04-29 228
1b1c2e95103ce3 Ben Hutchings 2009-04-29 229 case MDIO_PMA_CTRL2_10GBKX4:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 230 case MDIO_PMA_CTRL2_10GBKR:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 231 case MDIO_PMA_CTRL2_1000BKX:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 232 ecmd->port = PORT_OTHER;
894b19a6b343ce Ben Hutchings 2009-04-29 233 ecmd->supported = SUPPORTED_Backplane;
894b19a6b343ce Ben Hutchings 2009-04-29 234 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
894b19a6b343ce Ben Hutchings 2009-04-29 235 MDIO_PMA_EXTABLE);
894b19a6b343ce Ben Hutchings 2009-04-29 236 if (reg & MDIO_PMA_EXTABLE_10GBKX4)
894b19a6b343ce Ben Hutchings 2009-04-29 237 ecmd->supported |= SUPPORTED_10000baseKX4_Full;
894b19a6b343ce Ben Hutchings 2009-04-29 238 if (reg & MDIO_PMA_EXTABLE_10GBKR)
894b19a6b343ce Ben Hutchings 2009-04-29 239 ecmd->supported |= SUPPORTED_10000baseKR_Full;
894b19a6b343ce Ben Hutchings 2009-04-29 240 if (reg & MDIO_PMA_EXTABLE_1000BKX)
894b19a6b343ce Ben Hutchings 2009-04-29 241 ecmd->supported |= SUPPORTED_1000baseKX_Full;
894b19a6b343ce Ben Hutchings 2009-04-29 242 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
894b19a6b343ce Ben Hutchings 2009-04-29 243 MDIO_PMA_10GBR_FECABLE);
894b19a6b343ce Ben Hutchings 2009-04-29 244 if (reg & MDIO_PMA_10GBR_FECABLE_ABLE)
894b19a6b343ce Ben Hutchings 2009-04-29 245 ecmd->supported |= SUPPORTED_10000baseR_FEC;
894b19a6b343ce Ben Hutchings 2009-04-29 246 ecmd->advertising = ADVERTISED_Backplane;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 247 break;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 248
1b1c2e95103ce3 Ben Hutchings 2009-04-29 249 /* All the other defined modes are flavours of optical */
1b1c2e95103ce3 Ben Hutchings 2009-04-29 250 default:
1b1c2e95103ce3 Ben Hutchings 2009-04-29 251 ecmd->port = PORT_FIBRE;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 252 ecmd->supported = SUPPORTED_FIBRE;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 253 ecmd->advertising = ADVERTISED_FIBRE;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 254 break;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 255 }
1b1c2e95103ce3 Ben Hutchings 2009-04-29 256
1b1c2e95103ce3 Ben Hutchings 2009-04-29 257 if (mdio->mmds & MDIO_DEVS_AN) {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 258 ecmd->supported |= SUPPORTED_Autoneg;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 259 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
1b1c2e95103ce3 Ben Hutchings 2009-04-29 260 MDIO_CTRL1);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 261 if (reg & MDIO_AN_CTRL1_ENABLE) {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 262 ecmd->autoneg = AUTONEG_ENABLE;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 263 ecmd->advertising |=
1b1c2e95103ce3 Ben Hutchings 2009-04-29 264 ADVERTISED_Autoneg |
1b1c2e95103ce3 Ben Hutchings 2009-04-29 265 mdio45_get_an(mdio, MDIO_AN_ADVERTISE) |
1b1c2e95103ce3 Ben Hutchings 2009-04-29 266 npage_adv;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 267 } else {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 268 ecmd->autoneg = AUTONEG_DISABLE;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 269 }
1b1c2e95103ce3 Ben Hutchings 2009-04-29 270 } else {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 271 ecmd->autoneg = AUTONEG_DISABLE;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 272 }
1b1c2e95103ce3 Ben Hutchings 2009-04-29 273
1b1c2e95103ce3 Ben Hutchings 2009-04-29 274 if (ecmd->autoneg) {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 275 u32 modes = 0;
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 276 int an_stat = mdio->mdio_read(mdio->dev, mdio->prtad,
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 277 MDIO_MMD_AN, MDIO_STAT1);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 278
1b1c2e95103ce3 Ben Hutchings 2009-04-29 279 /* If AN is complete and successful, report best common
1b1c2e95103ce3 Ben Hutchings 2009-04-29 280 * mode, otherwise report best advertised mode. */
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 281 if (an_stat & MDIO_AN_STAT1_COMPLETE) {
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 282 ecmd->lp_advertising =
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 283 mdio45_get_an(mdio, MDIO_AN_LPA) | npage_lpa;
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 284 if (an_stat & MDIO_AN_STAT1_LPABLE)
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 285 ecmd->lp_advertising |= ADVERTISED_Autoneg;
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 286 modes = ecmd->advertising & ecmd->lp_advertising;
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 287 }
0c09c1a49cc7b8 Ben Hutchings 2009-04-29 288 if ((modes & ~ADVERTISED_Autoneg) == 0)
1b1c2e95103ce3 Ben Hutchings 2009-04-29 289 modes = ecmd->advertising;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 290
894b19a6b343ce Ben Hutchings 2009-04-29 291 if (modes & (ADVERTISED_10000baseT_Full |
894b19a6b343ce Ben Hutchings 2009-04-29 292 ADVERTISED_10000baseKX4_Full |
894b19a6b343ce Ben Hutchings 2009-04-29 293 ADVERTISED_10000baseKR_Full)) {
707394972093e2 David Decotigny 2011-04-27 294 speed = SPEED_10000;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 295 ecmd->duplex = DUPLEX_FULL;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 296 } else if (modes & (ADVERTISED_1000baseT_Full |
894b19a6b343ce Ben Hutchings 2009-04-29 297 ADVERTISED_1000baseT_Half |
894b19a6b343ce Ben Hutchings 2009-04-29 298 ADVERTISED_1000baseKX_Full)) {
707394972093e2 David Decotigny 2011-04-27 299 speed = SPEED_1000;
894b19a6b343ce Ben Hutchings 2009-04-29 300 ecmd->duplex = !(modes & ADVERTISED_1000baseT_Half);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 301 } else if (modes & (ADVERTISED_100baseT_Full |
1b1c2e95103ce3 Ben Hutchings 2009-04-29 302 ADVERTISED_100baseT_Half)) {
707394972093e2 David Decotigny 2011-04-27 303 speed = SPEED_100;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 304 ecmd->duplex = !!(modes & ADVERTISED_100baseT_Full);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 305 } else {
707394972093e2 David Decotigny 2011-04-27 306 speed = SPEED_10;
1b1c2e95103ce3 Ben Hutchings 2009-04-29 307 ecmd->duplex = !!(modes & ADVERTISED_10baseT_Full);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 308 }
1b1c2e95103ce3 Ben Hutchings 2009-04-29 309 } else {
1b1c2e95103ce3 Ben Hutchings 2009-04-29 310 /* Report forced settings */
1b1c2e95103ce3 Ben Hutchings 2009-04-29 311 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
1b1c2e95103ce3 Ben Hutchings 2009-04-29 312 MDIO_CTRL1);
707394972093e2 David Decotigny 2011-04-27 313 speed = (((reg & MDIO_PMA_CTRL1_SPEED1000) ? 100 : 1)
707394972093e2 David Decotigny 2011-04-27 314 * ((reg & MDIO_PMA_CTRL1_SPEED100) ? 100 : 10));
1b1c2e95103ce3 Ben Hutchings 2009-04-29 315 ecmd->duplex = (reg & MDIO_CTRL1_FULLDPLX ||
707394972093e2 David Decotigny 2011-04-27 316 speed == SPEED_10000);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 317 }
d005ba6cc82440 Ben Hutchings 2009-06-10 318
707394972093e2 David Decotigny 2011-04-27 319 ethtool_cmd_speed_set(ecmd, speed);
707394972093e2 David Decotigny 2011-04-27 320
d005ba6cc82440 Ben Hutchings 2009-06-10 321 /* 10GBASE-T MDI/MDI-X */
707394972093e2 David Decotigny 2011-04-27 322 if (ecmd->port == PORT_TP
707394972093e2 David Decotigny 2011-04-27 323 && (ethtool_cmd_speed(ecmd) == SPEED_10000)) {
d005ba6cc82440 Ben Hutchings 2009-06-10 324 switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
d005ba6cc82440 Ben Hutchings 2009-06-10 325 MDIO_PMA_10GBT_SWAPPOL)) {
d005ba6cc82440 Ben Hutchings 2009-06-10 326 case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX:
d005ba6cc82440 Ben Hutchings 2009-06-10 327 ecmd->eth_tp_mdix = ETH_TP_MDI;
d005ba6cc82440 Ben Hutchings 2009-06-10 328 break;
d005ba6cc82440 Ben Hutchings 2009-06-10 329 case 0:
d005ba6cc82440 Ben Hutchings 2009-06-10 330 ecmd->eth_tp_mdix = ETH_TP_MDI_X;
d005ba6cc82440 Ben Hutchings 2009-06-10 331 break;
d005ba6cc82440 Ben Hutchings 2009-06-10 332 default:
d005ba6cc82440 Ben Hutchings 2009-06-10 333 /* It's complicated... */
d005ba6cc82440 Ben Hutchings 2009-06-10 334 ecmd->eth_tp_mdix = ETH_TP_MDI_INVALID;
d005ba6cc82440 Ben Hutchings 2009-06-10 335 break;
d005ba6cc82440 Ben Hutchings 2009-06-10 336 }
d005ba6cc82440 Ben Hutchings 2009-06-10 337 }
1b1c2e95103ce3 Ben Hutchings 2009-04-29 338 }
1b1c2e95103ce3 Ben Hutchings 2009-04-29 339 EXPORT_SYMBOL(mdio45_ethtool_gset_npage);
1b1c2e95103ce3 Ben Hutchings 2009-04-29 340
8e4881aa1d5d2f Philippe Reynes 2017-01-01 341 /**
8e4881aa1d5d2f Philippe Reynes 2017-01-01 342 * mdio45_ethtool_ksettings_get_npage - get settings for ETHTOOL_GLINKSETTINGS
8e4881aa1d5d2f Philippe Reynes 2017-01-01 343 * @mdio: MDIO interface
8e4881aa1d5d2f Philippe Reynes 2017-01-01 344 * @cmd: Ethtool request structure
8e4881aa1d5d2f Philippe Reynes 2017-01-01 345 * @npage_adv: Modes currently advertised on next pages
8e4881aa1d5d2f Philippe Reynes 2017-01-01 346 * @npage_lpa: Modes advertised by link partner on next pages
8e4881aa1d5d2f Philippe Reynes 2017-01-01 347 *
8e4881aa1d5d2f Philippe Reynes 2017-01-01 348 * The @cmd parameter is expected to have been cleared before calling
8e4881aa1d5d2f Philippe Reynes 2017-01-01 349 * mdio45_ethtool_ksettings_get_npage().
8e4881aa1d5d2f Philippe Reynes 2017-01-01 350 *
8e4881aa1d5d2f Philippe Reynes 2017-01-01 351 * Since the CSRs for auto-negotiation using next pages are not fully
8e4881aa1d5d2f Philippe Reynes 2017-01-01 352 * standardised, this function does not attempt to decode them. The
8e4881aa1d5d2f Philippe Reynes 2017-01-01 353 * caller must pass them in.
8e4881aa1d5d2f Philippe Reynes 2017-01-01 354 */
8e4881aa1d5d2f Philippe Reynes 2017-01-01 @355 void mdio45_ethtool_ksettings_get_npage(const struct mdio_if_info *mdio,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 356 struct ethtool_link_ksettings *cmd,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 357 u32 npage_adv, u32 npage_lpa)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 358 {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 359 int reg;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 360 u32 speed, supported = 0, advertising = 0, lp_advertising = 0;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 361
8e4881aa1d5d2f Philippe Reynes 2017-01-01 362 BUILD_BUG_ON(MDIO_SUPPORTS_C22 != ETH_MDIO_SUPPORTS_C22);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 363 BUILD_BUG_ON(MDIO_SUPPORTS_C45 != ETH_MDIO_SUPPORTS_C45);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 364
8e4881aa1d5d2f Philippe Reynes 2017-01-01 365 cmd->base.phy_address = mdio->prtad;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 366 cmd->base.mdio_support =
8e4881aa1d5d2f Philippe Reynes 2017-01-01 367 mdio->mode_support & (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 368
8e4881aa1d5d2f Philippe Reynes 2017-01-01 369 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 370 MDIO_CTRL2);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 371 switch (reg & MDIO_PMA_CTRL2_TYPE) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 372 case MDIO_PMA_CTRL2_10GBT:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 373 case MDIO_PMA_CTRL2_1000BT:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 374 case MDIO_PMA_CTRL2_100BTX:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 375 case MDIO_PMA_CTRL2_10BT:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 376 cmd->base.port = PORT_TP;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 377 supported = SUPPORTED_TP;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 378 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 379 MDIO_SPEED);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 380 if (reg & MDIO_SPEED_10G)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 381 supported |= SUPPORTED_10000baseT_Full;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 382 if (reg & MDIO_PMA_SPEED_1000)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 383 supported |= (SUPPORTED_1000baseT_Full |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 384 SUPPORTED_1000baseT_Half);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 385 if (reg & MDIO_PMA_SPEED_100)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 386 supported |= (SUPPORTED_100baseT_Full |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 387 SUPPORTED_100baseT_Half);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 388 if (reg & MDIO_PMA_SPEED_10)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 389 supported |= (SUPPORTED_10baseT_Full |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 390 SUPPORTED_10baseT_Half);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 391 advertising = ADVERTISED_TP;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 392 break;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 393
8e4881aa1d5d2f Philippe Reynes 2017-01-01 394 case MDIO_PMA_CTRL2_10GBCX4:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 395 cmd->base.port = PORT_OTHER;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 396 supported = 0;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 397 advertising = 0;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 398 break;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 399
8e4881aa1d5d2f Philippe Reynes 2017-01-01 400 case MDIO_PMA_CTRL2_10GBKX4:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 401 case MDIO_PMA_CTRL2_10GBKR:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 402 case MDIO_PMA_CTRL2_1000BKX:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 403 cmd->base.port = PORT_OTHER;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 404 supported = SUPPORTED_Backplane;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 405 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 406 MDIO_PMA_EXTABLE);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 407 if (reg & MDIO_PMA_EXTABLE_10GBKX4)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 408 supported |= SUPPORTED_10000baseKX4_Full;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 409 if (reg & MDIO_PMA_EXTABLE_10GBKR)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 410 supported |= SUPPORTED_10000baseKR_Full;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 411 if (reg & MDIO_PMA_EXTABLE_1000BKX)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 412 supported |= SUPPORTED_1000baseKX_Full;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 413 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 414 MDIO_PMA_10GBR_FECABLE);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 415 if (reg & MDIO_PMA_10GBR_FECABLE_ABLE)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 416 supported |= SUPPORTED_10000baseR_FEC;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 417 advertising = ADVERTISED_Backplane;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 418 break;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 419
8e4881aa1d5d2f Philippe Reynes 2017-01-01 420 /* All the other defined modes are flavours of optical */
8e4881aa1d5d2f Philippe Reynes 2017-01-01 421 default:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 422 cmd->base.port = PORT_FIBRE;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 423 supported = SUPPORTED_FIBRE;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 424 advertising = ADVERTISED_FIBRE;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 425 break;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 426 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 427
8e4881aa1d5d2f Philippe Reynes 2017-01-01 428 if (mdio->mmds & MDIO_DEVS_AN) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 429 supported |= SUPPORTED_Autoneg;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 430 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 431 MDIO_CTRL1);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 432 if (reg & MDIO_AN_CTRL1_ENABLE) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 433 cmd->base.autoneg = AUTONEG_ENABLE;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 434 advertising |=
8e4881aa1d5d2f Philippe Reynes 2017-01-01 435 ADVERTISED_Autoneg |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 436 mdio45_get_an(mdio, MDIO_AN_ADVERTISE) |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 437 npage_adv;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 438 } else {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 439 cmd->base.autoneg = AUTONEG_DISABLE;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 440 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 441 } else {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 442 cmd->base.autoneg = AUTONEG_DISABLE;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 443 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 444
8e4881aa1d5d2f Philippe Reynes 2017-01-01 445 if (cmd->base.autoneg) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 446 u32 modes = 0;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 447 int an_stat = mdio->mdio_read(mdio->dev, mdio->prtad,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 448 MDIO_MMD_AN, MDIO_STAT1);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 449
8e4881aa1d5d2f Philippe Reynes 2017-01-01 450 /* If AN is complete and successful, report best common
8e4881aa1d5d2f Philippe Reynes 2017-01-01 451 * mode, otherwise report best advertised mode.
8e4881aa1d5d2f Philippe Reynes 2017-01-01 452 */
8e4881aa1d5d2f Philippe Reynes 2017-01-01 453 if (an_stat & MDIO_AN_STAT1_COMPLETE) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 454 lp_advertising =
8e4881aa1d5d2f Philippe Reynes 2017-01-01 455 mdio45_get_an(mdio, MDIO_AN_LPA) | npage_lpa;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 456 if (an_stat & MDIO_AN_STAT1_LPABLE)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 457 lp_advertising |= ADVERTISED_Autoneg;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 458 modes = advertising & lp_advertising;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 459 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 460 if ((modes & ~ADVERTISED_Autoneg) == 0)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 461 modes = advertising;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 462
8e4881aa1d5d2f Philippe Reynes 2017-01-01 463 if (modes & (ADVERTISED_10000baseT_Full |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 464 ADVERTISED_10000baseKX4_Full |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 465 ADVERTISED_10000baseKR_Full)) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 466 speed = SPEED_10000;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 467 cmd->base.duplex = DUPLEX_FULL;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 468 } else if (modes & (ADVERTISED_1000baseT_Full |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 469 ADVERTISED_1000baseT_Half |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 470 ADVERTISED_1000baseKX_Full)) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 471 speed = SPEED_1000;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 472 cmd->base.duplex = !(modes & ADVERTISED_1000baseT_Half);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 473 } else if (modes & (ADVERTISED_100baseT_Full |
8e4881aa1d5d2f Philippe Reynes 2017-01-01 474 ADVERTISED_100baseT_Half)) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 475 speed = SPEED_100;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 476 cmd->base.duplex = !!(modes & ADVERTISED_100baseT_Full);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 477 } else {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 478 speed = SPEED_10;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 479 cmd->base.duplex = !!(modes & ADVERTISED_10baseT_Full);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 480 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 481 } else {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 482 /* Report forced settings */
8e4881aa1d5d2f Philippe Reynes 2017-01-01 483 reg = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 484 MDIO_CTRL1);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 485 speed = (((reg & MDIO_PMA_CTRL1_SPEED1000) ? 100 : 1)
8e4881aa1d5d2f Philippe Reynes 2017-01-01 486 * ((reg & MDIO_PMA_CTRL1_SPEED100) ? 100 : 10));
8e4881aa1d5d2f Philippe Reynes 2017-01-01 487 cmd->base.duplex = (reg & MDIO_CTRL1_FULLDPLX ||
8e4881aa1d5d2f Philippe Reynes 2017-01-01 488 speed == SPEED_10000);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 489 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 490
8e4881aa1d5d2f Philippe Reynes 2017-01-01 491 cmd->base.speed = speed;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 492
8e4881aa1d5d2f Philippe Reynes 2017-01-01 493 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 494 supported);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 495 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 496 advertising);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 497 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.lp_advertising,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 498 lp_advertising);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 499
8e4881aa1d5d2f Philippe Reynes 2017-01-01 500 /* 10GBASE-T MDI/MDI-X */
8e4881aa1d5d2f Philippe Reynes 2017-01-01 501 if (cmd->base.port == PORT_TP && (cmd->base.speed == SPEED_10000)) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 502 switch (mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_PMAPMD,
8e4881aa1d5d2f Philippe Reynes 2017-01-01 503 MDIO_PMA_10GBT_SWAPPOL)) {
8e4881aa1d5d2f Philippe Reynes 2017-01-01 504 case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 505 cmd->base.eth_tp_mdix = ETH_TP_MDI;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 506 break;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 507 case 0:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 508 cmd->base.eth_tp_mdix = ETH_TP_MDI_X;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 509 break;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 510 default:
8e4881aa1d5d2f Philippe Reynes 2017-01-01 511 /* It's complicated... */
8e4881aa1d5d2f Philippe Reynes 2017-01-01 512 cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 513 break;
8e4881aa1d5d2f Philippe Reynes 2017-01-01 514 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 515 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 516 }
8e4881aa1d5d2f Philippe Reynes 2017-01-01 517 EXPORT_SYMBOL(mdio45_ethtool_ksettings_get_npage);
8e4881aa1d5d2f Philippe Reynes 2017-01-01 518
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
On Mon, Nov 04, 2024 at 05:09:50PM +1000, Alistair Francis wrote: > The static inline functions mdio45_ethtool_gset() and > mdio45_ethtool_ksettings_get() call mdio45_ethtool_gset_npage() and > mdio45_ethtool_ksettings_get_npage() which are both guarded by > CONFIG_MDIO. So let's only expose mdio45_ethtool_gset() and > mdio45_ethtool_ksettings_get() if CONFIG_MDIO is defined. Why? Are you fixing a linker error? A compiler error? In general, we don't want #ifdef if they are not necessary, because they reduce the effectiveness of build testing. Andrew
On Mon, Nov 4, 2024 at 11:49 PM Andrew Lunn <andrew@lunn.ch> wrote: > > On Mon, Nov 04, 2024 at 05:09:50PM +1000, Alistair Francis wrote: > > The static inline functions mdio45_ethtool_gset() and > > mdio45_ethtool_ksettings_get() call mdio45_ethtool_gset_npage() and > > mdio45_ethtool_ksettings_get_npage() which are both guarded by > > CONFIG_MDIO. So let's only expose mdio45_ethtool_gset() and > > mdio45_ethtool_ksettings_get() if CONFIG_MDIO is defined. > > Why? Are you fixing a linker error? A compiler error? I'm investigating generating Rust bindings for static inline functions (like mdio45_ethtool_gset() for example). But it fails to build when there are functions defined in header files that call C functions that aren't built due to Kconfig options. This is one of those cases where mdio45_ethtool_gset() is always included, but mdio45_ethtool_gset_npage() is conditionally built. Alistair > > In general, we don't want #ifdef if they are not necessary, because > they reduce the effectiveness of build testing. > > Andrew
On Tue, Nov 05, 2024 at 10:21:15AM +1000, Alistair Francis wrote: > On Mon, Nov 4, 2024 at 11:49 PM Andrew Lunn <andrew@lunn.ch> wrote: > > > > On Mon, Nov 04, 2024 at 05:09:50PM +1000, Alistair Francis wrote: > > > The static inline functions mdio45_ethtool_gset() and > > > mdio45_ethtool_ksettings_get() call mdio45_ethtool_gset_npage() and > > > mdio45_ethtool_ksettings_get_npage() which are both guarded by > > > CONFIG_MDIO. So let's only expose mdio45_ethtool_gset() and > > > mdio45_ethtool_ksettings_get() if CONFIG_MDIO is defined. > > > > Why? Are you fixing a linker error? A compiler error? > > I'm investigating generating Rust bindings for static inline functions > (like mdio45_ethtool_gset() for example). But it fails to build when > there are functions defined in header files that call C functions that > aren't built due to Kconfig options. Since this does not appear to be an issue for C, i assume these functions are not actually used in that configuration. And this is probably not an issue specific to MDIO. It will probably appear all over the kernel. Adding lots of #ifdef in header files will probably not be liked. Does Rust have the concept of inline functions? If it is never used, it never gets compiled? Or at least, it gets optimised out before it gets linked, which i think is your issue here. Andrew
On Tue, Nov 5, 2024 at 10:37 AM Andrew Lunn <andrew@lunn.ch> wrote:
>
> On Tue, Nov 05, 2024 at 10:21:15AM +1000, Alistair Francis wrote:
> > On Mon, Nov 4, 2024 at 11:49 PM Andrew Lunn <andrew@lunn.ch> wrote:
> > >
> > > On Mon, Nov 04, 2024 at 05:09:50PM +1000, Alistair Francis wrote:
> > > > The static inline functions mdio45_ethtool_gset() and
> > > > mdio45_ethtool_ksettings_get() call mdio45_ethtool_gset_npage() and
> > > > mdio45_ethtool_ksettings_get_npage() which are both guarded by
> > > > CONFIG_MDIO. So let's only expose mdio45_ethtool_gset() and
> > > > mdio45_ethtool_ksettings_get() if CONFIG_MDIO is defined.
> > >
> > > Why? Are you fixing a linker error? A compiler error?
> >
> > I'm investigating generating Rust bindings for static inline functions
> > (like mdio45_ethtool_gset() for example). But it fails to build when
> > there are functions defined in header files that call C functions that
> > aren't built due to Kconfig options.
>
> Since this does not appear to be an issue for C, i assume these
> functions are not actually used in that configuration. And this is
> probably not an issue specific to MDIO. It will probably appear all
> over the kernel. Adding lots of #ifdef in header files will probably
> not be liked.
It's not actually a Rust issue, it's a problem with linking.
This is the type of errors I get
```
ld: vmlinux.o: in function `mdio45_ethtool_gset':
/scratch/alistair/software/linux/./include/linux/mdio.h:189:(.text+0x59e819):
undefined reference to `mdio45_ethtool_gset_npage'
ld: vmlinux.o: in function `mdio45_ethtool_ksettings_get':
/scratch/alistair/software/linux/./include/linux/mdio.h:206:(.text+0x59e839):
undefined reference to `mdio45_ethtool_ksettings_get_npage'
make[2]: *** [scripts/Makefile.vmlinux:34: vmlinux] Error 1
```
Which comes from autogenerated C code like this
```
void mdio45_ethtool_gset__extern(const struct mdio_if_info *mdio,
struct ethtool_cmd *ecmd) { mdio45_ethtool_gset(mdio, ecmd); }
```
mdio45_ethtool_gset__extern() is never called, so I'm not clear why
it's not optimised out.
It's not only MDIO that hits this, but so far there aren't too many
cases. That will obviously depend on the config used though.
There will be issues like this over the kernel. I'm not sure fixing
them all is the right approach as it might be too much work and too
hard to narrow down all occurance. But to me it seems like the corect
fix as the current code is calling a function that might not exist,
hence the patch :)
If it's not something that we think should be fixed then that's fine,
I can work around it.
Alistair
>
> Does Rust have the concept of inline functions? If it is never used,
> it never gets compiled? Or at least, it gets optimised out before it
> gets linked, which i think is your issue here.
>
> Andrew
> Which comes from autogenerated C code like this
>
> ```
> void mdio45_ethtool_gset__extern(const struct mdio_if_info *mdio,
> struct ethtool_cmd *ecmd) { mdio45_ethtool_gset(mdio, ecmd); }
> ```
>
> mdio45_ethtool_gset__extern() is never called, so I'm not clear why
> it's not optimised out.
I think you need to understand this first, before deciding on the path
forward.
> It's not only MDIO that hits this, but so far there aren't too many
> cases. That will obviously depend on the config used though.
>
> There will be issues like this over the kernel. I'm not sure fixing
> them all is the right approach as it might be too much work and too
> hard to narrow down all occurance.
Actually, that is mostly just CPU cycles. There are build bots which
make builds with random configurations. Arnd Bergmann has one such
bot, for example. Systems like that will find the issues for you.
> But to me it seems like the correct
> fix as the current code is calling a function that might not exist,
> hence the patch :)
As 0-day has shown, another build bot, your patch is not correct and
causes problems. You can try again, but maybe first dig into the
linker.
Humm, interesting. I don't actually find anything calling
mdio45_ethtool_gset(). So you might be able to just remove it. And
then i think you can remove mdio45_ethtool_gset_npage(). But i might
be wrong...
Andrew
Hi Alistair,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on horms-ipvs/master v6.12-rc6 next-20241104]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Alistair-Francis/include-mdio-Guard-inline-function-with-CONFIG_MDIO/20241104-151211
base: linus/master
patch link: https://lore.kernel.org/r/20241104070950.502719-1-alistair.francis%40wdc.com
patch subject: [PATCH] include: mdio: Guard inline function with CONFIG_MDIO
config: parisc-allmodconfig (https://download.01.org/0day-ci/archive/20241104/202411042121.OYNPibb0-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241104/202411042121.OYNPibb0-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411042121.OYNPibb0-lkp@intel.com/
All errors (new ones prefixed by >>):
drivers/net/ethernet/sfc/falcon/qt202x_phy.c: In function 'qt202x_phy_get_link_ksettings':
>> drivers/net/ethernet/sfc/falcon/qt202x_phy.c:440:9: error: implicit declaration of function 'mdio45_ethtool_ksettings_get' [-Wimplicit-function-declaration]
440 | mdio45_ethtool_ksettings_get(&efx->mdio, cmd);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
drivers/net/ethernet/sfc/falcon/tenxpress.c: In function 'tenxpress_get_link_ksettings':
>> drivers/net/ethernet/sfc/falcon/tenxpress.c:453:9: error: implicit declaration of function 'mdio45_ethtool_ksettings_get_npage' [-Wimplicit-function-declaration]
453 | mdio45_ethtool_ksettings_get_npage(&efx->mdio, cmd, adv, lpa);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
drivers/net/ethernet/sfc/falcon/txc43128_phy.c: In function 'txc43128_get_link_ksettings':
>> drivers/net/ethernet/sfc/falcon/txc43128_phy.c:543:9: error: implicit declaration of function 'mdio45_ethtool_ksettings_get' [-Wimplicit-function-declaration]
543 | mdio45_ethtool_ksettings_get(&efx->mdio, cmd);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/mdio45_ethtool_ksettings_get +440 drivers/net/ethernet/sfc/falcon/qt202x_phy.c
8ceee660aacb29 drivers/net/sfc/xfp_phy.c Ben Hutchings 2008-04-27 436
e938ed150f1ed9 drivers/net/ethernet/sfc/falcon/qt202x_phy.c Philippe Reynes 2017-01-01 437 static void qt202x_phy_get_link_ksettings(struct ef4_nic *efx,
e938ed150f1ed9 drivers/net/ethernet/sfc/falcon/qt202x_phy.c Philippe Reynes 2017-01-01 438 struct ethtool_link_ksettings *cmd)
68e7f45e118f98 drivers/net/sfc/xfp_phy.c Ben Hutchings 2009-04-29 439 {
e938ed150f1ed9 drivers/net/ethernet/sfc/falcon/qt202x_phy.c Philippe Reynes 2017-01-01 @440 mdio45_ethtool_ksettings_get(&efx->mdio, cmd);
68e7f45e118f98 drivers/net/sfc/xfp_phy.c Ben Hutchings 2009-04-29 441 }
8ceee660aacb29 drivers/net/sfc/xfp_phy.c Ben Hutchings 2008-04-27 442
--
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