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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2013-06-18 10:05:29 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2013-06-26 16:03:36 +0300 |
| commit | 2c30aba2b2894ceb2108f1cb2602015b121e9a81 (patch) | |
| tree | 0972bcf333d5c4273167fe2b8d1f31fdb74adebb /drivers/video/fbmem.c | |
| parent | 72e5512ade915862035679ca51c4645c7fb5f1ca (diff) | |
| download | linux-2c30aba2b2894ceb2108f1cb2602015b121e9a81.tar.bz2 | |
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>
Diffstat (limited to 'drivers/video/fbmem.c')
| -rw-r--r-- | drivers/video/fbmem.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 098bfc64cfb9..9217be3d8f3e 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -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, |