[kbuild-all] Re: [krzk-mem-ctrl:for-v5.17/renesas-rpc 5/5] drivers/memory/renesas-rpc-if.c:253:14: warning: cast to smaller integer type 'enum rpcif_type' from 'const void *'

-----Original Message----- From: Krzysztof Kozlowski <krzysztof.kozlowski(a)canonical.com&gt; Sent: 21 November 2021 12:31 To: kernel test robot <lkp(a)intel.com&gt;; Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj(a)bp.renesas.com&gt; Cc: llvm(a)lists.linux.dev; kbuild-all(a)lists.01.org; linux-kernel(a)vger.kernel.org; Biju Das <biju.das.jz(a)bp.renesas.com&gt;; Wolfram Sang <wsa-dev(a)sang-engineering.com&gt; Subject: Re: [krzk-mem-ctrl:for-v5.17/renesas-rpc 5/5] drivers/memory/renesas-rpc-if.c:253:14: warning: cast to smaller integer type 'enum rpcif_type' from 'const void *' On 17/11/2021 09:27, Krzysztof Kozlowski wrote: > On 17/11/2021 04:56, kernel test robot wrote: >> tree: https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.ker... Fkernel%2Fgit%2Fkrzk%2Flinux-mem-ctrl.git&amp;data=04%7C01%7Cprabhakar.mahadev- lad.rj%40bp.renesas.com%7C2dc6e2d7058a4d615cec08d9aceac56f%7C53d82571da1947e49cb4625a166a4a2a%7C0%7C0% 7C637730946616076082%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXV CI6Mn0%3D%7C3000&amp;sdata=jDl%2B2uGmMvHbDRBNhRYdHcMs8tVpV2QyHjIEvIjmBog%3D&amp;reserved=0 for- v5.17/renesas-rpc >> head: b04cc0d912eb80d3c438b11d96ca847c3e77e8ab >> commit: b04cc0d912eb80d3c438b11d96ca847c3e77e8ab [5/5] memory: >> renesas-rpc-if: Add support for RZ/G2L >> config: x86_64-buildonly-randconfig-r002-20211116 (attached as >> .config) >> compiler: clang version 14.0.0 >> (https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgi >> thub.com%2Fllvm%2Fllvm-project&amp;data=04%7C01%7Cprabhakar.mahadev-l >> ad.rj%40bp.renesas.com%7C2dc6e2d7058a4d615cec08d9aceac56f%7C53d82571d >> a1947e49cb4625a166a4a2a%7C0%7C0%7C637730946616076082%7CUnknown%7CTWFp >> bGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6M >> n0%3D%7C3000&amp;sdata=GncdHf45Tf5IFjq650tIcWCQHr8b%2FKi%2BW%2F5%2Frh >> WLCZo%3D&amp;reserved=0 4c2cf3a314d9131b1b288e7c8ab0c75ac1b2be1d) >> reproduce (this is a W=1 build): >> wget https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fraw.git... lkp-tests%2Fmaster%2Fsbin%2Fmake.cross&amp;data=04%7C01%7Cprabhakar.mahadev- lad.rj%40bp.renesas.com%7C2dc6e2d7058a4d615cec08d9aceac56f%7C53d82571da1947e49cb4625a166a4a2a%7C0%7C0% 7C637730946616086037%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXV CI6Mn0%3D%7C3000&amp;sdata=A2rdd3p77C5yTeebqFwISM8aINdbRAbWrsreBV9%2BcpI%3D&amp;reserved=0 -O ~/bin/make.cross >> chmod +x ~/bin/make.cross >> # https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.ker... Fkernel%2Fgit%2Fkrzk%2Flinux-mem- ctrl.git%2Fcommit%2F%3Fid%3Db04cc0d912eb80d3c438b11d96ca847c3e77e8ab&amp;data=04%7C01%7Cprabhakar.maha dev- lad.rj%40bp.renesas.com%7C2dc6e2d7058a4d615cec08d9aceac56f%7C53d82571da1947e49cb4625a166a4a2a%7C0%7C0% 7C637730946616086037%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXV CI6Mn0%3D%7C3000&amp;sdata=RkD43W82kRZCCNpN%2FqxuQb%2FVNaKkJvgHt8NN8A%2BgIsw%3D&amp;reserved=0 >> git remote add krzk-mem-ctrl https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgit.ker... Fkernel%2Fgit%2Fkrzk%2Flinux-mem-ctrl.git&amp;data=04%7C01%7Cprabhakar.mahadev- lad.rj%40bp.renesas.com%7C2dc6e2d7058a4d615cec08d9aceac56f%7C53d82571da1947e49cb4625a166a4a2a%7C0%7C0% 7C637730946616086037%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXV CI6Mn0%3D%7C3000&amp;sdata=unRWu2Zo3KD9lrN8%2BgWHDqvUdcmISul3ynABH8YVj44%3D&amp;reserved=0 >> git fetch --no-tags krzk-mem-ctrl for-v5.17/renesas-rpc >> git checkout b04cc0d912eb80d3c438b11d96ca847c3e77e8ab >> # save the attached .config to linux build tree >> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross >> W=1 ARCH=x86_64 >> >> If you fix the issue, kindly add following tag as appropriate >> Reported-by: kernel test robot <lkp(a)intel.com&gt; >> >> All warnings (new ones prefixed by >>): >> >>>> drivers/memory/renesas-rpc-if.c:253:14: warning: cast to smaller >>>> integer type 'enum rpcif_type' from 'const void *' >>>> [-Wvoid-pointer-to-enum-cast] >> rpc->type = (enum rpcif_type)of_device_get_match_data(dev); >> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> 1 warning generated. >> > > I am afraid several drivers repeat this pattern and will be affected > as well on clang. GCC does not complain (apparently cast is enough for > GCC), but still this has to be fixed. Maybe cast via uintptr_t would > quite it? > > Let me know when I can expect the fix. > Any progress on fixing this one? It blocks entire set (and further Wolfram's patches) from being included in pull-request and might be postponed till next release.