From: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date: Thu, 19 Apr 2012 17:59:20 +0000 (+0200)
Subject: nvc0/fb: shut up PMFB interrupt after the first occurrence
X-Git-Tag: v3.12-rc1~3279^2~3^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ffc6a4e49e5bc117aac13ed752cfc018c163e2ac;p=kernel%2Fkernel-generic.git

nvc0/fb: shut up PMFB interrupt after the first occurrence

Signed-off-by: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/drivers/gpu/drm/nouveau/nvc0_fb.c b/drivers/gpu/drm/nouveau/nvc0_fb.c
index 5bf5503..f704e94 100644
--- a/drivers/gpu/drm/nouveau/nvc0_fb.c
+++ b/drivers/gpu/drm/nouveau/nvc0_fb.c
@@ -54,6 +54,11 @@ nvc0_mfb_isr(struct drm_device *dev)
 			nvc0_mfb_subp_isr(dev, unit, subp);
 		units &= ~(1 << unit);
 	}
+
+	/* we do something horribly wrong and upset PMFB a lot, so mask off
+	 * interrupts from it after the first one until it's fixed
+	 */
+	nv_mask(dev, 0x000640, 0x02000000, 0x00000000);
 }
 
 static void