linux-kernel - [011/289] drm/radeon/kms: fix 2D tile height alignment in the r600 CS checker

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Date:	Tue, 07 Dec 2010 16:56:28 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Alex Deucher <alexdeucher@...il.com>,
	Dave Airlie <airlied@...hat.com>
Subject: [011/289] drm/radeon/kms: fix 2D tile height alignment in the r600 CS checker

2.6.36-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alex Deucher <alexdeucher@...il.com>

commit 354da653233898ed1e51f20cebac9705456bf9b1 upstream.

macro tile heights are aligned to num channels, not num banks.

Noticed by Dave Airlie.

Signed-off-by: Alex Deucher <alexdeucher@...il.com>
Signed-off-by: Dave Airlie <airlied@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/gpu/drm/radeon/r600_cs.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -228,7 +228,7 @@ static inline int r600_cs_track_validate
 				__func__, __LINE__, pitch);
 			return -EINVAL;
 		}
-		if (!IS_ALIGNED((height / 8), track->nbanks)) {
+		if (!IS_ALIGNED((height / 8), track->npipes)) {
 			dev_warn(p->dev, "%s:%d cb height (%d) invalid\n",
 				 __func__, __LINE__, height);
 			return -EINVAL;
@@ -367,7 +367,7 @@ static int r600_cs_track_check(struct ra
 						 __func__, __LINE__, pitch);
 					return -EINVAL;
 				}
-				if ((height / 8) & (track->nbanks - 1)) {
+				if (!IS_ALIGNED((height / 8), track->npipes)) {
 					dev_warn(p->dev, "%s:%d db height (%d) invalid\n",
 						 __func__, __LINE__, height);
 					return -EINVAL;


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