Patch "drm/radeon: skip colorbuffer checking if COLOR_INFO.FORMAT is set to INVALID" has been added to the 3.12-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/radeon: skip colorbuffer checking if COLOR_INFO.FORMAT is set to INVALID

to the 3.12-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-radeon-skip-colorbuffer-checking-if-color_info.format-is-set-to-invalid.patch
and it can be found in the queue-3.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 56492e0fac2dbaf7735ffd66b206a90624917789 Mon Sep 17 00:00:00 2001
From: Marek Olšák <marek.olsak@xxxxxxx>
Date: Wed, 8 Jan 2014 18:16:26 +0100
Subject: drm/radeon: skip colorbuffer checking if COLOR_INFO.FORMAT is set to INVALID
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Marek Olšák <marek.olsak@xxxxxxx>

commit 56492e0fac2dbaf7735ffd66b206a90624917789 upstream.

This fixes a bug which was causing rejections of valid GPU commands
from userspace.

Signed-off-by: Marek Olšák <marek.olsak@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/gpu/drm/radeon/evergreen_cs.c |    5 ++++-
 drivers/gpu/drm/radeon/r600_cs.c      |    5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -967,7 +967,10 @@ static int evergreen_cs_track_check(stru
 	if (track->cb_dirty) {
 		tmp = track->cb_target_mask;
 		for (i = 0; i < 8; i++) {
-			if ((tmp >> (i * 4)) & 0xF) {
+			u32 format = G_028C70_FORMAT(track->cb_color_info[i]);
+
+			if (format != V_028C70_COLOR_INVALID &&
+			    (tmp >> (i * 4)) & 0xF) {
 				/* at least one component is enabled */
 				if (track->cb_color_bo[i] == NULL) {
 					dev_warn(p->dev, "%s:%d mask 0x%08X | 0x%08X no cb for %d\n",
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -749,7 +749,10 @@ static int r600_cs_track_check(struct ra
 		}
 
 		for (i = 0; i < 8; i++) {
-			if ((tmp >> (i * 4)) & 0xF) {
+			u32 format = G_0280A0_FORMAT(track->cb_color_info[i]);
+
+			if (format != V_0280A0_COLOR_INVALID &&
+			    (tmp >> (i * 4)) & 0xF) {
 				/* at least one component is enabled */
 				if (track->cb_color_bo[i] == NULL) {
 					dev_warn(p->dev, "%s:%d mask 0x%08X | 0x%08X no cb for %d\n",


Patches currently in stable-queue which might be from marek.olsak@xxxxxxx are

queue-3.12/drm-radeon-skip-colorbuffer-checking-if-color_info.format-is-set-to-invalid.patch
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