[PATCH] drm: Print bad EDID notices only once

[Andi Kleen]

I have an old monitor that reports a zero EDID block, which results in a
warning message. This happens on every screen save cycle, and maybe in
some other situations, and over time the whole kernel log gets filled
with these redundant messages. Printing it only once should be
sufficient.

Mark all the bad EDID notices as _once.

Signed-off-by: Andi Kleen <ak at linux.intel.com>
---
 drivers/gpu/drm/drm_edid.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 855beafb76ff..d6b47bdcd5d7 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1916,10 +1916,10 @@ static void edid_block_status_print(enum edid_block_status status,
 		pr_debug("EDID block %d pointer is NULL\n", block_num);
 		break;
 	case EDID_BLOCK_ZERO:
-		pr_notice("EDID block %d is all zeroes\n", block_num);
+		pr_notice_once("EDID block %d is all zeroes\n", block_num);
 		break;
 	case EDID_BLOCK_HEADER_CORRUPT:
-		pr_notice("EDID has corrupt header\n");
+		pr_notice_once("EDID has corrupt header\n");
 		break;
 	case EDID_BLOCK_HEADER_REPAIR:
 		pr_debug("EDID corrupt header needs repair\n");
@@ -1933,13 +1933,13 @@ static void edid_block_status_print(enum edid_block_status status,
 				 block_num, edid_block_tag(block),
 				 edid_block_compute_checksum(block));
 		} else {
-			pr_notice("EDID block %d (tag 0x%02x) checksum is invalid, remainder is %d\n",
+			pr_notice_once("EDID block %d (tag 0x%02x) checksum is invalid, remainder is %d\n",
 				  block_num, edid_block_tag(block),
 				  edid_block_compute_checksum(block));
 		}
 		break;
 	case EDID_BLOCK_VERSION:
-		pr_notice("EDID has major version %d, instead of 1\n",
+		pr_notice_once("EDID has major version %d, instead of 1\n",
 			  block->version);
 		break;
 	default:
-- 
2.46.1