[AMD Official Use Only - Internal Distribution Only] ++Siqueira.
Regards, Bindu ________________________________ From: Alex Deucher <alexdeuc...@gmail.com> Sent: Tuesday, December 29, 2020 10:07 AM To: Linus Torvalds <torva...@linux-foundation.org>; Wentland, Harry <harry.wentl...@amd.com>; Kazlauskas, Nicholas <nicholas.kazlaus...@amd.com>; Wu, Hersen <hersenxs...@amd.com> Cc: Dave Airlie <airl...@gmail.com>; Pavic, Josip <josip.pa...@amd.com>; R, Bindu <bind...@amd.com>; Deucher, Alexander <alexander.deuc...@amd.com>; Daniel Vetter <daniel.vet...@ffwll.ch>; LKML <linux-ker...@vger.kernel.org>; dri-devel <dri-devel@lists.freedesktop.org> Subject: Re: [git pull] drm fixes for 5.11-rc1 On Thu, Dec 24, 2020 at 5:28 PM Linus Torvalds <torva...@linux-foundation.org> wrote: > > On Wed, Dec 23, 2020 at 6:29 PM Dave Airlie <airl...@gmail.com> wrote: > > > > Xmas eve pull request present. Just some fixes that trickled in this > > past week. Mostly amdgpu fixes, with a dma-buf/mips build fix and some > > misc komeda fixes. > > Well, I already pulled and pushed out my merge, but only noticed > afterwards that clang complains about this, and I think it's a real > bug: > > drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_mpc.c:475:6: warning: > variable 'val' is used uninitialized whenever 'if' condition is > false [-Wsometimes-uninitialized] > > and it sure is true: the code literally does > > uint32_t val; > > if (opp_id < MAX_OPP && REG(MUX[opp_id])) > REG_GET(MUX[opp_id], MPC_OUT_MUX, &val); > > return val; > > so clearly 'val' isn't initialized if that if-statement isn't true. > > I assume 'opp_id' is always presumed to be valid, but that code really > is disgusting. > > Just make it return 0 (or whatever) for invalid, possibly together > with a WARN_ON_ONCE(). Ok? Harry, Nick, Hersen, Can you take a look? Thanks, Alex > > Linus > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.freedesktop.org%2Fmailman%2Flistinfo%2Fdri-devel&data=04%7C01%7Cbindu.r%40amd.com%7Cae8f547c9287426b9b9408d8ac0b7b73%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637448512618562550%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=4gcQRS3HI4u1UEWu35Ze1w5CLWmAof5nouCFQoKEQD0%3D&reserved=0
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