linux-kernel - [ 08/21] drm/nouveau/bios: fix thinko in ZM_MASK

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Message-Id: <20130522205233.621865109@linuxfoundation.org>
Date:	Wed, 22 May 2013 15:10:26 -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, Ben Skeggs <bskeggs@...hat.com>
Subject: [ 08/21] drm/nouveau/bios: fix thinko in ZM_MASK_ADD opcode

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

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

From: Ben Skeggs <bskeggs@...hat.com>

commit 46b47b8a7d9223b12ddcabf1f3fc6e753e2d84a1 upstream.

Signed-off-by: Ben Skeggs <bskeggs@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/nouveau/core/subdev/bios/init.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/nouveau/core/subdev/bios/init.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/init.c
@@ -1926,8 +1926,8 @@ init_zm_mask_add(struct nvbios_init *ini
 	trace("ZM_MASK_ADD\tR[0x%06x] &= 0x%08x += 0x%08x\n", addr, mask, add);
 	init->offset += 13;
 
-	data  =  init_rd32(init, addr) & mask;
-	data |= ((data + add) & ~mask);
+	data =  init_rd32(init, addr);
+	data = (data & mask) | ((data + add) & ~mask);
 	init_wr32(init, addr, data);
 }
 


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