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fbmem: return -EFAULT on copy_to_user() failure 

copy_to_user() returns the number of bytes remaining to be copied.
put_user() returns -EFAULT on error.

This function ORs a bunch of stuff together and returns jumbled non-zero
values on error.  It should return -EFAULT.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Dan Carpenter 2013-06-18 10:05:29 +03:00 committed by Tomi Valkeinen
parent 72e5512ade
commit 2c30aba2b2
1 changed files with 3 additions and 1 deletions
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4
drivers/video/fbmem.c
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@ -1305,7 +1305,9 @@ static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix,
err |= copy_to_user(fix32->reserved, fix->reserved,
sizeof(fix->reserved));
return err;
if (err)
return -EFAULT;
return 0;
}
static int fb_get_fscreeninfo(struct fb_info *info, unsigned int cmd,