linux-kernel - Re: Linux 2.6.29-rc6 - Fix oops in i915_gem_retire

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Message-Id: <200902231507.58049.fzu@wemgehoertderstaat.de>
Date:	Mon, 23 Feb 2009 15:07:57 +0100
From:	Karsten Wiese <fzu@...gehoertderstaat.de>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Eric Anholt <eric@...olt.net>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.29-rc6 - Fix oops in i915_gem_retire_requests

Fix an oops in i915_gem_retire_requests()

dev_priv->hw_status_page can be NULL, if i915_gem_retire_requests()
is called from i915_gem_busy_ioctl().

Signed-off-by Karsten Wiese <fzu@...gehoertderstaat.de>
---
 drivers/gpu/drm/i915/i915_gem.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 25b3374..28b726d 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1051,6 +1051,9 @@ i915_gem_retire_requests(struct drm_device *dev)
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	uint32_t seqno;
 
+	if (!dev_priv->hw_status_page)
+		return;
+
 	seqno = i915_get_gem_seqno(dev);
 
 	while (!list_empty(&dev_priv->mm.request_list)) {
-- 
1.6.0.6
--
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