The device property APIs designed that way that they will return an error when
there is no valid fwnode provided. Moreover, the check for NULL of dev_fwnode()
is not fully correct as in some (currently rare) cases it may contain an error
pointer. This is not a problem anyway (see keyword 'valid' above) that's why
the code works properly even without this change.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 23 +++++---------------
1 file changed, 6 insertions(+), 17 deletions(-)
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 722b43f9203b..a7760c000c8c 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -2127,25 +2127,15 @@ static const struct iio_info st_lsm6dsx_gyro_info = {
.write_raw_get_fmt = st_lsm6dsx_write_raw_get_fmt,
};
-static int st_lsm6dsx_get_drdy_pin(struct st_lsm6dsx_hw *hw, int *drdy_pin)
-{
- struct device *dev = hw->dev;
-
- if (!dev_fwnode(dev))
- return -EINVAL;
-
- return device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin);
-}
-
static int
st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
const struct st_lsm6dsx_reg **drdy_reg)
{
+ struct device *dev = hw->dev;
int err = 0, drdy_pin;
- if (st_lsm6dsx_get_drdy_pin(hw, &drdy_pin) < 0) {
+ if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
struct st_sensors_platform_data *pdata;
- struct device *dev = hw->dev;
pdata = (struct st_sensors_platform_data *)dev->platform_data;
drdy_pin = pdata ? pdata->drdy_int_pin : 1;
@@ -2180,7 +2170,7 @@ static int st_lsm6dsx_init_shub(struct st_lsm6dsx_hw *hw)
hub_settings = &hw->settings->shub_settings;
pdata = (struct st_sensors_platform_data *)dev->platform_data;
- if ((dev_fwnode(dev) && device_property_read_bool(dev, "st,pullups")) ||
+ if (device_property_read_bool(dev, "st,pullups") ||
(pdata && pdata->pullups)) {
if (hub_settings->pullup_en.sec_page) {
err = st_lsm6dsx_set_page(hw, true);
@@ -2565,7 +2555,7 @@ static int st_lsm6dsx_irq_setup(struct st_lsm6dsx_hw *hw)
return err;
pdata = (struct st_sensors_platform_data *)dev->platform_data;
- if ((dev_fwnode(dev) && device_property_read_bool(dev, "drive-open-drain")) ||
+ if (device_property_read_bool(dev, "drive-open-drain") ||
(pdata && pdata->open_drain)) {
reg = &hw->settings->irq_config.od;
err = regmap_update_bits(hw->regmap, reg->addr, reg->mask,
@@ -2693,8 +2683,7 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
hub_settings = &hw->settings->shub_settings;
if (hub_settings->master_en.addr &&
- (!dev_fwnode(dev) ||
- !device_property_read_bool(dev, "st,disable-sensor-hub"))) {
+ !device_property_read_bool(dev, "st,disable-sensor-hub")) {
err = st_lsm6dsx_shub_probe(hw, name);
if (err < 0)
return err;
@@ -2735,7 +2724,7 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
return err;
}
- if ((dev_fwnode(dev) && device_property_read_bool(dev, "wakeup-source")) ||
+ if (device_property_read_bool(dev, "wakeup-source") ||
(pdata && pdata->wakeup_source))
device_init_wakeup(dev, true);
--
2.46.0Hi Andy,
kernel test robot noticed the following build warnings:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.11-rc5 next-20240827]
[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/Andy-Shevchenko/iio-imu-st_lsm6dsx-Use-iio_read_acpi_mount_matrix-helper/20240827-052617
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20240826212344.866928-3-andy.shevchenko%40gmail.com
patch subject: [PATCH v1 2/2] iio: imu: st_lsm6dsx: Remove useless dev_fwnode() calls
config: x86_64-randconfig-122-20240828 (https://download.01.org/0day-ci/archive/20240828/202408281240.oT6C3uTj-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240828/202408281240.oT6C3uTj-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/202408281240.oT6C3uTj-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:62: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected unsigned int [usertype] *val @@ got int drdy_pin @@
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:62: sparse: expected unsigned int [usertype] *val
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:62: sparse: got int drdy_pin
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:62: sparse: sparse: non size-preserving integer to pointer cast
vim +2137 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
2129
2130 static int
2131 st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
2132 const struct st_lsm6dsx_reg **drdy_reg)
2133 {
2134 struct device *dev = hw->dev;
2135 int err = 0, drdy_pin;
2136
> 2137 if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
2138 struct st_sensors_platform_data *pdata;
2139
2140 pdata = (struct st_sensors_platform_data *)dev->platform_data;
2141 drdy_pin = pdata ? pdata->drdy_int_pin : 1;
2142 }
2143
2144 switch (drdy_pin) {
2145 case 1:
2146 hw->irq_routing = &hw->settings->irq_config.irq1_func;
2147 *drdy_reg = &hw->settings->irq_config.irq1;
2148 break;
2149 case 2:
2150 hw->irq_routing = &hw->settings->irq_config.irq2_func;
2151 *drdy_reg = &hw->settings->irq_config.irq2;
2152 break;
2153 default:
2154 dev_err(hw->dev, "unsupported data ready pin\n");
2155 err = -EINVAL;
2156 break;
2157 }
2158
2159 return err;
2160 }
2161
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Andy,
kernel test robot noticed the following build errors:
[auto build test ERROR on jic23-iio/togreg]
[also build test ERROR on linus/master v6.11-rc5 next-20240827]
[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/Andy-Shevchenko/iio-imu-st_lsm6dsx-Use-iio_read_acpi_mount_matrix-helper/20240827-052617
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20240826212344.866928-3-andy.shevchenko%40gmail.com
patch subject: [PATCH v1 2/2] iio: imu: st_lsm6dsx: Remove useless dev_fwnode() calls
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240827/202408272326.NVkKclXF-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 08e5a1de8227512d4774a534b91cb2353cef6284)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408272326.NVkKclXF-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/202408272326.NVkKclXF-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:75:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:181:
In file included from arch/s390/include/asm/mmu_context.h:11:
In file included from arch/s390/include/asm/pgalloc.h:18:
In file included from include/linux/mm.h:2228:
include/linux/vmstat.h:500:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
500 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
501 | item];
| ~~~~
include/linux/vmstat.h:507:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
507 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
508 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:519:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
519 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
520 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:528:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
528 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
529 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:84:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/s390/include/asm/io.h:93:
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/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:84:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/s390/include/asm/io.h:93:
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/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:84:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/s390/include/asm/io.h:93:
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/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:55: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'u32 *' (aka 'unsigned int *') [-Wint-conversion]
2137 | if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
| ^~~~~~~~
include/linux/property.h:229:36: note: passing argument to parameter 'val' here
229 | const char *propname, u32 *val)
| ^
17 warnings and 1 error generated.
vim +2137 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
2129
2130 static int
2131 st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
2132 const struct st_lsm6dsx_reg **drdy_reg)
2133 {
2134 struct device *dev = hw->dev;
2135 int err = 0, drdy_pin;
2136
> 2137 if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
2138 struct st_sensors_platform_data *pdata;
2139
2140 pdata = (struct st_sensors_platform_data *)dev->platform_data;
2141 drdy_pin = pdata ? pdata->drdy_int_pin : 1;
2142 }
2143
2144 switch (drdy_pin) {
2145 case 1:
2146 hw->irq_routing = &hw->settings->irq_config.irq1_func;
2147 *drdy_reg = &hw->settings->irq_config.irq1;
2148 break;
2149 case 2:
2150 hw->irq_routing = &hw->settings->irq_config.irq2_func;
2151 *drdy_reg = &hw->settings->irq_config.irq2;
2152 break;
2153 default:
2154 dev_err(hw->dev, "unsupported data ready pin\n");
2155 err = -EINVAL;
2156 break;
2157 }
2158
2159 return err;
2160 }
2161
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Andy,
kernel test robot noticed the following build warnings:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.11-rc5 next-20240827]
[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/Andy-Shevchenko/iio-imu-st_lsm6dsx-Use-iio_read_acpi_mount_matrix-helper/20240827-052617
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20240826212344.866928-3-andy.shevchenko%40gmail.com
patch subject: [PATCH v1 2/2] iio: imu: st_lsm6dsx: Remove useless dev_fwnode() calls
config: arm64-randconfig-002-20240827 (https://download.01.org/0day-ci/archive/20240827/202408272315.6tUsOdsF-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408272315.6tUsOdsF-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/202408272315.6tUsOdsF-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:55: warning: incompatible integer to pointer conversion passing 'int' to parameter of type 'u32 *' (aka 'unsigned int *') [-Wint-conversion]
if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
^~~~~~~~
include/linux/property.h:229:36: note: passing argument to parameter 'val' here
const char *propname, u32 *val)
^
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:55: warning: variable 'drdy_pin' is uninitialized when used here [-Wuninitialized]
if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
^~~~~~~~
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2135:23: note: initialize the variable 'drdy_pin' to silence this warning
int err = 0, drdy_pin;
^
= 0
2 warnings generated.
vim +2137 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
2129
2130 static int
2131 st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
2132 const struct st_lsm6dsx_reg **drdy_reg)
2133 {
2134 struct device *dev = hw->dev;
2135 int err = 0, drdy_pin;
2136
> 2137 if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
2138 struct st_sensors_platform_data *pdata;
2139
2140 pdata = (struct st_sensors_platform_data *)dev->platform_data;
2141 drdy_pin = pdata ? pdata->drdy_int_pin : 1;
2142 }
2143
2144 switch (drdy_pin) {
2145 case 1:
2146 hw->irq_routing = &hw->settings->irq_config.irq1_func;
2147 *drdy_reg = &hw->settings->irq_config.irq1;
2148 break;
2149 case 2:
2150 hw->irq_routing = &hw->settings->irq_config.irq2_func;
2151 *drdy_reg = &hw->settings->irq_config.irq2;
2152 break;
2153 default:
2154 dev_err(hw->dev, "unsupported data ready pin\n");
2155 err = -EINVAL;
2156 break;
2157 }
2158
2159 return err;
2160 }
2161
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Andy,
kernel test robot noticed the following build warnings:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.11-rc5 next-20240827]
[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/Andy-Shevchenko/iio-imu-st_lsm6dsx-Use-iio_read_acpi_mount_matrix-helper/20240827-052617
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/20240826212344.866928-3-andy.shevchenko%40gmail.com
patch subject: [PATCH v1 2/2] iio: imu: st_lsm6dsx: Remove useless dev_fwnode() calls
config: arc-randconfig-001-20240827 (https://download.01.org/0day-ci/archive/20240827/202408272259.MsdckhWn-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408272259.MsdckhWn-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/202408272259.MsdckhWn-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c: In function 'st_lsm6dsx_get_drdy_reg':
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:62: warning: passing argument 3 of 'device_property_read_u32' makes pointer from integer without a cast [-Wint-conversion]
2137 | if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
| ^~~~~~~~
| |
| int
In file included from include/linux/acpi.h:16,
from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:76:
include/linux/property.h:229:71: note: expected 'u32 *' {aka 'unsigned int *'} but argument is of type 'int'
229 | const char *propname, u32 *val)
| ~~~~~^~~
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2137:13: warning: 'drdy_pin' is used uninitialized [-Wuninitialized]
2137 | if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:2135:22: note: 'drdy_pin' was declared here
2135 | int err = 0, drdy_pin;
| ^~~~~~~~
vim +/device_property_read_u32 +2137 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
2129
2130 static int
2131 st_lsm6dsx_get_drdy_reg(struct st_lsm6dsx_hw *hw,
2132 const struct st_lsm6dsx_reg **drdy_reg)
2133 {
2134 struct device *dev = hw->dev;
2135 int err = 0, drdy_pin;
2136
> 2137 if (device_property_read_u32(dev, "st,drdy-int-pin", drdy_pin) < 0) {
2138 struct st_sensors_platform_data *pdata;
2139
2140 pdata = (struct st_sensors_platform_data *)dev->platform_data;
2141 drdy_pin = pdata ? pdata->drdy_int_pin : 1;
2142 }
2143
2144 switch (drdy_pin) {
2145 case 1:
2146 hw->irq_routing = &hw->settings->irq_config.irq1_func;
2147 *drdy_reg = &hw->settings->irq_config.irq1;
2148 break;
2149 case 2:
2150 hw->irq_routing = &hw->settings->irq_config.irq2_func;
2151 *drdy_reg = &hw->settings->irq_config.irq2;
2152 break;
2153 default:
2154 dev_err(hw->dev, "unsupported data ready pin\n");
2155 err = -EINVAL;
2156 break;
2157 }
2158
2159 return err;
2160 }
2161
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