iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/msm/a6xx: Fix speed-bin detection vs probe-defer

Browse Source 
[ Upstream commit f6d1918794ef92b4e26b80c3d40365347b76b1fd ]

If we get an error (other than -ENOENT) we need to propagate that up the
stack.  Otherwise if the nvmem driver hasn't probed yet, we'll end up
end up claiming that we support all the OPPs which is not likely to be
true (and on some generations impossible to be true, ie. if there are
conflicting OPPs).

v2: Update commit msg, gc unused label, etc
v3: Add previously missing \n's

Fixes: fe7952c629da ("drm/msm: Add speed-bin support to a618 gpu")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/511690/
Link: https://lore.kernel.org/r/20221115154637.1613968-1-robdclark@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Rob Clark 2022-11-15 07:46:34 -08:00 committed by Greg Kroah-Hartman
parent fea795f7c7
commit ab4e42f519
1 changed files with 5 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/msm/adreno/a6xx_gpu.c
View File

@ -1746,7 +1746,7 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_rev rev, u32 fuse)
if (val == UINT_MAX) {
DRM_DEV_ERROR(dev,
"missing support for speed-bin: %u. Some OPPs may not be supported by hardware",
"missing support for speed-bin: %u. Some OPPs may not be supported by hardware\n",
fuse);
return UINT_MAX;
}
@ -1756,7 +1756,7 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_rev rev, u32 fuse)
static int a6xx_set_supported_hw(struct device *dev, struct adreno_rev rev)
{
u32 supp_hw = UINT_MAX;
u32 supp_hw;
u32 speedbin;
int ret;
@ -1768,15 +1768,13 @@ static int a6xx_set_supported_hw(struct device *dev, struct adreno_rev rev)
if (ret == -ENOENT) {
return 0;
} else if (ret) {
DRM_DEV_ERROR(dev,
"failed to read speed-bin (%d). Some OPPs may not be supported by hardware",
ret);
goto done;
dev_err_probe(dev, ret,
"failed to read speed-bin. Some OPPs may not be supported by hardware\n");
return ret;
}
supp_hw = fuse_to_supp_hw(dev, rev, speedbin);
done:
ret = devm_pm_opp_set_supported_hw(dev, &supp_hw, 1);
if (ret)
return ret;