drm: radeon: radeon_ttm: Handle return NULL error from ioremap_nocache

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Here, If ioremap_nocache will fail. It will return NULL.
Kernel can run into a NULL-pointer dereference.
This error check will avoid NULL pointer dereference.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Arvind Yadav 2017-01-24 14:46:16 +05:30 • committed by Alex Deucher

parent 8ba28ac9f5

commit 3b2c693282

1 changed files with 2 additions and 0 deletions

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drivers/gpu/drm/radeon/radeon_ttm.c

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