[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