Archit Taneja 3ca14535c7 drm/msm: Fix NULL deref in adreno_load_gpu ...

[ Upstream commit 9dcfbc182f ]

The msm/kms driver should work even if there is no GPU device specified
in DT. Currently, we get a NULL dereference crash in adreno_load_gpu
since the driver assumes that priv->gpu_pdev is non-NULL.

Perform an additional check on priv->gpu_pdev before trying to retrieve
the msm_gpu pointer from it.

v2: Incorporate Jordan's comments:
- Simplify the check to share the same error message.
- Use dev_err_once() to avoid an error message every time we open the
  drm device fd.

Fixes: eec874ce5f (drm/msm/adreno: load gpu at probe/bind time)

Signed-off-by: Archit Taneja <architt@codeaurora.org>
Acked-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-12 12:31:05 +02:00

..

drm

drm/msm: Fix NULL deref in adreno_load_gpu

2018-04-12 12:31:05 +02:00

host1x

Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux

2017-11-15 20:42:10 -08:00

ipu-v3

Merge tag 'drm-for-v4.15-part2' of git://people.freedesktop.org/~airlied/linux

2017-11-23 21:04:56 -10:00

vga

vgaarb: Factor out EFI and fallback default device selection

2017-10-18 10:04:56 +02:00

Makefile

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