linux-kernel - [PATCH] nouveau: Set special lane map for the right chipset

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Message-Id: <1334270220-6181-1-git-send-email-rydberg@euromail.se>
Date:	Fri, 13 Apr 2012 00:37:00 +0200
From:	"Henrik Rydberg" <rydberg@...omail.se>
To:	Dave Airlie <airlied@...il.com>
Cc:	Ben Skeggs <bskeggs@...hat.com>, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, Henrik Rydberg <rydberg@...omail.se>
Subject: [PATCH] nouveau: Set special lane map for the right chipset

The refactoring of the nv50 logic, introduced in 8663bc7c, modified the
test for the special lane map used on some Apple computers with Nvidia
chipsets. The tested MBA3,1 would still boot, but resume from suspend
stopped working. This patch restores the old test, which fixes the problem.

Signed-off-by: Henrik Rydberg <rydberg@...omail.se>
---
Hi Dave,

This patch fixes a regression in 3.4, tested against -rc2. Resending
for your convenience, in case it got lost.

Thanks,
Henrik

 drivers/gpu/drm/nouveau/nv50_sor.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index a7844ab..2746402 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -42,7 +42,7 @@ nv50_sor_dp_lane_map(struct drm_device *dev, struct dcb_entry *dcb, u8 lane)
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	static const u8 nvaf[] = { 24, 16, 8, 0 }; /* thanks, apple.. */
 	static const u8 nv50[] = { 16, 8, 0, 24 };
-	if (dev_priv->card_type == 0xaf)
+	if (dev_priv->chipset == 0xaf)
 		return nvaf[lane];
 	return nv50[lane];
 }
-- 
1.7.9.5

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