See also
https://lore.kernel.org/lkml/cadnq5_ndtzh5_rgdwkj9c_42xlvrnccs5ddu1ysptfzp94k...@mail.gmail.com/T/#me707e09e92c6e487285e8bb382a607e4e782c249
On Tue, May 5, 2020 at 7:17 AM Christian König <christian.koe...@amd.com> wrote:
>
> Am 05.05.20 um 16:15 schrieb Arnd Bergmann:
> > Multiplying 1000000000 by four overruns a 'long' variable, as clang
> > points out:
> >
> > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c:4160:53: error: overflow in
> > expression; result is -294967296 with type 'long'
> > [-Werror,-Winteger-overflow]
> > expires = ktime_get_mono_fast_ns() + NSEC_PER_SEC * 4L;
> > ^
> > Make this a 'long long' constant instead.
> >
> > Fixes: 3f12acc8d6d4 ("drm/amdgpu: put the audio codec into suspend state
> > before gpu reset V3")
> > Signed-off-by: Arnd Bergmann <a...@arndb.de>
>
> Reviewed-by: Christian König <christian.koe...@amd.com>
>
> > ---
> > I'm not sure the ktime_get_mono_fast_ns() call is necessary here
> > either. Is it intentional because ktime_get_ns() doesn't work
> > during a driver suspend, or just a mistake?
> > ---
> > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> > index 6f93af972b0a..2e07e3e6b036 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> > @@ -4157,7 +4157,7 @@ static int amdgpu_device_suspend_display_audio(struct
> > amdgpu_device *adev)
> > * the audio controller default autosuspend delay setting.
> > * 4S used here is guaranteed to cover that.
> > */
> > - expires = ktime_get_mono_fast_ns() + NSEC_PER_SEC * 4L;
> > + expires = ktime_get_mono_fast_ns() + NSEC_PER_SEC * 4LL;
> >
> > while (!pm_runtime_status_suspended(&(p->dev))) {
> > if (!pm_runtime_suspend(&(p->dev)))
>
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--
Thanks,
~Nick Desaulniers
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