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charset="utf-8" Hi Luiz, Below warning is resolved with following code change: diff --git a/drivers/bluetooth/btnxpuart.c b/drivers/bluetooth/btnxpuart.c index 5f641466d695..fa6ac4dacd1d 100644 --- a/drivers/bluetooth/btnxpuart.c +++ b/drivers/bluetooth/btnxpuart.c @@ -1264,6 +1264,7 @@ static void nxp_serdev_remove(struct serdev_device *s= erdev) hci_free_dev(hdev); } +#ifdef CONFIG_OF static struct btnxpuart_data w8987_data =3D { .fw_download_3M_baudrate =3D true, .fw_name =3D FIRMWARE_W8987, @@ -1280,6 +1281,7 @@ static const struct of_device_id nxpuart_of_match_tab= le[] =3D { { } }; MODULE_DEVICE_TABLE(of, nxpuart_of_match_table); +#endif However, I was asked to remove this '#ifdef CONFIG_OF' in V2 patch by Rob, = as this driver only supports DT. https://patchwork.kernel.org/project/bluetooth/patch/20230130180504.2029440= -4-neeraj.sanjaykale@nxp.com/ Please let me know if I should add it back to resolve this warning. Thanks, Neeraj > -----Original Message----- > From: kernel test robot > Sent: Saturday, April 29, 2023 10:10 PM > To: Neeraj sanjay kale > Cc: llvm@lists.linux.dev; oe-kbuild-all@lists.linux.dev; linux- > kernel@vger.kernel.org; Luiz Augusto von Dentz ; > Ilpo J=C3=A4rvinen > Subject: [EXT] drivers/bluetooth/btnxpuart.c:1277:34: warning: unused > variable 'nxpuart_of_match_table' > > Caution: This is an external email. Please take care when clicking links = or > opening attachments. When in doubt, report the message using the 'Report > this email' button > > > tree: > https://git.ker/ > nel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux.git&da > ta=3D05%7C01%7Cneeraj.sanjaykale%40nxp.com%7C11316289cf9545181d0108 > db48d0676b%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638183 > 832151571141%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJ > QIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdat > a=3D4l684I87hYaEh5cUL%2Bq15Vded2F4OQ3DgIugH4zWUJw%3D&reserved=3D0 > master > head: 89d77f71f493a3663b10fa812d17f472935d24be > commit: 689ca16e523278470c38832a3010645a78c544d8 Bluetooth: NXP: Add > protocol support for NXP Bluetooth chipsets > date: 6 days ago > config: hexagon-randconfig-r045-20230428 > (https://dow/ > nload.01.org%2F0day- > ci%2Farchive%2F20230430%2F202304300014.vFGw6Dr0- > lkp%40intel.com%2Fconfig&data=3D05%7C01%7Cneeraj.sanjaykale%40nxp.co > m%7C11316289cf9545181d0108db48d0676b%7C686ea1d3bc2b4c6fa92cd99c > 5c301635%7C0%7C0%7C638183832151571141%7CUnknown%7CTWFpbGZsb > 3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0 > %3D%7C3000%7C%7C%7C&sdata=3DeIEMVERAnzpSUne5cHVZ4E%2F4J%2BDI0 > yWQv0muvQCHGx4%3D&reserved=3D0) > compiler: clang version 17.0.0 > (https://githu/ > b.com%2Fllvm%2Fllvm- > project&data=3D05%7C01%7Cneeraj.sanjaykale%40nxp.com%7C11316289cf954 > 5181d0108db48d0676b%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0 > %7C638183832151727365%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLj > AwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C% > 7C%7C&sdata=3DqPIgkv4%2FfQT%2FaNq5p9oGoU6bcdlA7Afgk5EcmmzAUDE% > 3D&reserved=3D0 437b7602e4a998220871de78afcb020b9c14a661) > reproduce (this is a W=3D1 build): > wget > https://raw.gi/ > thubusercontent.com%2Fintel%2Flkp- > tests%2Fmaster%2Fsbin%2Fmake.cross&data=3D05%7C01%7Cneeraj.sanjaykal > e%40nxp.com%7C11316289cf9545181d0108db48d0676b%7C686ea1d3bc2b4 > c6fa92cd99c5c301635%7C0%7C0%7C638183832151727365%7CUnknown%7C > TWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiL > CJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3DOb0AKmINs53NPoF%2B6MI4 > %2Bco1dbRThKLdfqWeon%2F5G%2Bs%3D&reserved=3D0 -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # > https://git.ker/ > nel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux.git%2F > commit%2F%3Fid%3D689ca16e523278470c38832a3010645a78c544d8&data=3D > 05%7C01%7Cneeraj.sanjaykale%40nxp.com%7C11316289cf9545181d0108db > 48d0676b%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C63818383 > 2151727365%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIj > oiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3D > Gr95jXMcCmzeEhCJbbUaz05ng1APFM3Go0CtIK6VLdk%3D&reserved=3D0 > git remote add linus > https://git.ker/ > nel.org%2Fpub%2Fscm%2Flinux%2Fkernel%2Fgit%2Ftorvalds%2Flinux.git&da > ta=3D05%7C01%7Cneeraj.sanjaykale%40nxp.com%7C11316289cf9545181d0108 > db48d0676b%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C638183 > 832151727365%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJ > QIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdat > a=3DGqQ70C15HhFspSctvuCHHbJliFN2mv94%2Faw%2BrBjUlB4%3D&reserved=3D > 0 > git fetch --no-tags linus master > git checkout 689ca16e523278470c38832a3010645a78c544d8 > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dclang make.cross > W=3D1 O=3Dbuild_dir ARCH=3Dhexagon olddefconfig > COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dclang make.cross > W=3D1 O=3Dbuild_dir ARCH=3Dhexagon SHELL=3D/bin/bash drivers/bluetooth/ > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot > | Link: > https://lore.k/ > ernel.org%2Foe-kbuild-all%2F202304300014.vFGw6Dr0- > lkp%40intel.com%2F&data=3D05%7C01%7Cneeraj.sanjaykale%40nxp.com%7C1 > 1316289cf9545181d0108db48d0676b%7C686ea1d3bc2b4c6fa92cd99c5c3016 > 35%7C0%7C0%7C638183832151727365%7CUnknown%7CTWFpbGZsb3d8eyJ > WIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D% > 7C3000%7C%7C%7C&sdata=3DfuRUTaxTT04M2tT6SUVJDRWbTo3lAkdxgSTk4ov > enh8%3D&reserved=3D0 > > All warnings (new ones prefixed by >>): > > In file included from drivers/bluetooth/btnxpuart.c:10: > In file included from include/linux/serdev.h:10: > In file included from include/linux/iopoll.h:14: > In file included from include/linux/io.h:13: > In file included from arch/hexagon/include/asm/io.h:334: > include/asm-generic/io.h:547:31: warning: performing pointer arithmetic > on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > val =3D __raw_readb(PCI_IOBASE + addr); > ~~~~~~~~~~ ^ > include/asm-generic/io.h:560:61: warning: performing pointer arithmetic > on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > val =3D __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + > addr)); > ~~~~~~~~~~ ^ > include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from > macro '__le16_to_cpu' > #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) > ^ > In file included from drivers/bluetooth/btnxpuart.c:10: > In file included from include/linux/serdev.h:10: > In file included from include/linux/iopoll.h:14: > In file included from include/linux/io.h:13: > In file included from arch/hexagon/include/asm/io.h:334: > include/asm-generic/io.h:573:61: warning: performing pointer arithmetic > on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > val =3D __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE += addr)); > ~~~~~~~~~~ ^ > include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from > macro '__le32_to_cpu' > #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) > ^ > In file included from drivers/bluetooth/btnxpuart.c:10: > In file included from include/linux/serdev.h:10: > In file included from include/linux/iopoll.h:14: > In file included from include/linux/io.h:13: > In file included from arch/hexagon/include/asm/io.h:334: > include/asm-generic/io.h:584:33: warning: performing pointer arithmetic > on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > __raw_writeb(value, PCI_IOBASE + addr); > ~~~~~~~~~~ ^ > include/asm-generic/io.h:594:59: warning: performing pointer arithmetic > on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + add= r); > ~~~~~~~~~~ ^ > include/asm-generic/io.h:604:59: warning: performing pointer arithmetic > on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] > __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + add= r); > ~~~~~~~~~~ ^ > >> drivers/bluetooth/btnxpuart.c:1277:34: warning: unused variable > 'nxpuart_of_match_table' [-Wunused-const-variable] > static const struct of_device_id nxpuart_of_match_table[] =3D { > ^ > 7 warnings generated. > > > vim +/nxpuart_of_match_table +1277 drivers/bluetooth/btnxpuart.c > > 1276 > > 1277 static const struct of_device_id nxpuart_of_match_table[] =3D { > 1278 { .compatible =3D "nxp,88w8987-bt", .data =3D &w8987_data= }, > 1279 { .compatible =3D "nxp,88w8997-bt", .data =3D &w8997_data= }, > 1280 { } > 1281 }; > 1282 MODULE_DEVICE_TABLE(of, nxpuart_of_match_table); > 1283 > > -- > 0-DAY CI Kernel Test Service > https://github/ > .com%2Fintel%2Flkp- > tests&data=3D05%7C01%7Cneeraj.sanjaykale%40nxp.com%7C11316289cf9545 > 181d0108db48d0676b%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0% > 7C638183832151727365%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjA > wMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7 > C%7C&sdata=3DkT8SZ3zL7FhnwCwY3eSxuj8y0uZCJx4RpYjGSPBL%2BjE%3D&res > erved=3D0