korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-18 17:54:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/i915: check the return value from the copy from user

Browse Source 
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>
This commit is contained in:
Dave Airlie 2009-03-28 20:29:48 -04:00
parent 90f959bcb3
commit d008877550
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/i915/i915_gem.c
View File

@ -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;
}