From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 10 Feb 2017 19:59:13 +0000 (+0000)
Subject: drm: Reduce EDID warnings from DRM_ERROR to DRM_NOTE
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=813a787861a41da45678176b3923c6992e084cc2;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

drm: Reduce EDID warnings from DRM_ERROR to DRM_NOTE

The warnings from parsing the EDID are not driver errors, but the
"normal but significant" conditions from the external device. As such,
they do not need the ferocity of an *ERROR*, but can use the less harsh
DRM_NOTE instead.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170210195913.9878-1-chris@chris-wilson.co.uk
---

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 5a3b34a88ac3..24e7b282f16c 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1140,7 +1140,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
 			DRM_DEBUG("Assuming a KVM switch modified the CEA block but left the original checksum\n");
 		} else {
 			if (print_bad_edid)
-				DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
+				DRM_NOTE("EDID checksum is invalid, remainder is %d\n", csum);
 
 			goto bad;
 		}
@@ -1150,7 +1150,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
 	switch (raw_edid[0]) {
 	case 0: /* base */
 		if (edid->version != 1) {
-			DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
+			DRM_NOTE("EDID has major version %d, instead of 1\n", edid->version);
 			goto bad;
 		}
 
@@ -1167,11 +1167,12 @@ bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid,
 bad:
 	if (print_bad_edid) {
 		if (drm_edid_is_zero(raw_edid, EDID_LENGTH)) {
-			printk(KERN_ERR "EDID block is all zeroes\n");
+			printk(KERN_NOTICE "EDID block is all zeroes\n");
 		} else {
-			printk(KERN_ERR "Raw EDID:\n");
-			print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1,
-			       raw_edid, EDID_LENGTH, false);
+			printk(KERN_NOTICE "Raw EDID:\n");
+			print_hex_dump(KERN_NOTICE,
+				       " \t", DUMP_PREFIX_NONE, 16, 1,
+				       raw_edid, EDID_LENGTH, false);
 		}
 	}
 	return false;
@@ -4002,7 +4003,7 @@ static int validate_displayid(u8 *displayid, int length, int idx)
 		csum += displayid[i];
 	}
 	if (csum) {
-		DRM_ERROR("DisplayID checksum invalid, remainder is %d\n", csum);
+		DRM_NOTE("DisplayID checksum invalid, remainder is %d\n", csum);
 		return -EINVAL;
 	}
 	return 0;