[PATCH 2/3] drm: move edid null check to the first part of drm_edid_block_valid

[Seung-Woo Kim]

If raw_edid is null, it will crash, so checking in bad label is
meaningless.

Signed-off-by: Seung-Woo Kim <sw0312.kim at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 drivers/gpu/drm/drm_edid.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 2dc1a60..dbaed34 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -968,6 +968,9 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool 
print_bad_edid)
        u8 csum = 0;
        struct edid *edid = (struct edid *)raw_edid;

+       if (!raw_edid)
+               return 0;
+
        if (edid_fixup > 8 || edid_fixup < 0)
                edid_fixup = 6;

@@ -1013,7 +1016,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool 
print_bad_edid)
        return 1;

 bad:
-       if (raw_edid && print_bad_edid) {
+       if (print_bad_edid) {
                printk(KERN_ERR "Raw EDID:\n");
                print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1,
                               raw_edid, EDID_LENGTH, false);
-- 
1.7.4.1