From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu, 29 May 2014 21:23:08 +0000 (+0200)
Subject: drm/i915: Fix context locking in debugfs
X-Git-Tag: v3.17-rc1~82^2~63^2~78
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f3d28878da307c394a870252094136ea8387144d;p=karo-tx-linux.git

drm/i915: Fix context locking in debugfs

This goes all the way back to the introduction of this debugfs file,
even though back then no locking really was required. None of the
intermediate patches fixed this.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 601caa88c092..c2e211a7a508 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1721,7 +1721,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 	struct intel_context *ctx;
 	int ret, i;
 
-	ret = mutex_lock_interruptible(&dev->mode_config.mutex);
+	ret = mutex_lock_interruptible(&dev->struct_mutex);
 	if (ret)
 		return ret;
 
@@ -1751,7 +1751,7 @@ static int i915_context_status(struct seq_file *m, void *unused)
 		seq_putc(m, '\n');
 	}
 
-	mutex_unlock(&dev->mode_config.mutex);
+	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
 }