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| author | Dave Airlie <airlied@redhat.com> | 2009-03-28 20:29:48 -0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-03-28 20:29:48 -0400 |
| commit | d008877550d8ca8c6878dd494e50c1b9209f38d4 (patch) | |
| tree | 7ce65d9e868b05bac04201ebfc089ea1228b134a /drivers/gpu | |
| parent | 90f959bcb386da2c71613dcefc6a285e054a539e (diff) | |
| download | linux-stable-d008877550d8ca8c6878dd494e50c1b9209f38d4.tar.gz linux-stable-d008877550d8ca8c6878dd494e50c1b9209f38d4.tar.bz2 linux-stable-d008877550d8ca8c6878dd494e50c1b9209f38d4.zip | |
drm/i915: check the return value from the copy from user
This produced a warning on my build, not sure why super-warning-man didn't
notice this one, its much worse than the %z one.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index e5d2bdf2cc9b..e0389ad1477d 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -446,13 +446,16 @@ fast_shmem_write(struct page **pages, int length) { char __iomem *vaddr; + unsigned long unwritten; vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); if (vaddr == NULL) return -ENOMEM; - __copy_from_user_inatomic(vaddr + page_offset, data, length); + unwritten = __copy_from_user_inatomic(vaddr + page_offset, data, length); kunmap_atomic(vaddr, KM_USER0); + if (unwritten) + return -EFAULT; return 0; } |