linux-kernel - [ 47/57] drm/radeon/cik: Fix encoding of number of banks in tiling configuration info

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Message-Id: <20131003040639.814609818@linuxfoundation.org>
Date:	Wed,  2 Oct 2013 21:09:13 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Michel Dänzer <michel.daenzer@....com>,
	Alex Deucher <alexander.deucher@....com>
Subject: [ 47/57] drm/radeon/cik: Fix encoding of number of banks in tiling configuration info

3.11-stable review patch.  If anyone has any objections, please let me know.

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

From: Michel Dänzer <michel.daenzer@....com>

commit a537314e0b539e22934d3cffeb0b1f476e56491c upstream.

There are multiple valid values, not just 0 or 1.  Required
to properly support 2D tiling in the userspace drivers.

Signed-off-by: Michel Dänzer <michel.daenzer@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/radeon/cik.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -2008,10 +2008,8 @@ static void cik_gpu_init(struct radeon_d
 		rdev->config.cik.tile_config |= (3 << 0);
 		break;
 	}
-	if ((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT)
-		rdev->config.cik.tile_config |= 1 << 4;
-	else
-		rdev->config.cik.tile_config |= 0 << 4;
+	rdev->config.cik.tile_config |=
+		((mc_arb_ramcfg & NOOFBANK_MASK) >> NOOFBANK_SHIFT) << 4;
 	rdev->config.cik.tile_config |=
 		((gb_addr_config & PIPE_INTERLEAVE_SIZE_MASK) >> PIPE_INTERLEAVE_SIZE_SHIFT) << 8;
 	rdev->config.cik.tile_config |=


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