diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2012-11-09 16:10:42 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2012-11-20 10:06:17 +0400 |
| commit | 6311803b1294432ee680fec5e628efae0d485fa2 (patch) | |
| tree | 1eb5e83d7f1b6b8872fcd2d3abda782f4f5e881d /drivers/gpu/drm/drm_edid.c | |
| parent | c61eef726a78ae77b6ce223d01ea2130f465fe5c (diff) | |
| download | linux-6311803b1294432ee680fec5e628efae0d485fa2.tar.xz | |
drm: use memchr_inv()
Use memchr_inv() to check the specified memory region is filled with zero.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 856dcd91b3d4..164820003546 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -307,12 +307,9 @@ drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf, static bool drm_edid_is_zero(u8 *in_edid, int length) { - int i; - u32 *raw_edid = (u32 *)in_edid; + if (memchr_inv(in_edid, 0, length)) + return false; - for (i = 0; i < length / 4; i++) - if (*(raw_edid + i) != 0) - return false; return true; } |