From: Dave Airlie <airlied@redhat.com>
Date: Fri, 25 Jan 2008 06:34:05 +0000 (+1000)
Subject: if irq already enabled well just keep trucking
X-Git-Tag: submit/1.0/20121108.012404~642^2~295
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=98361cf28c62530e34758b27aa1eea805269e0e5;p=profile%2Fivi%2Flibdrm.git

if irq already enabled well just keep trucking
---

diff --git a/linux-core/drm_irq.c b/linux-core/drm_irq.c
index 367d2dd..c75f20b 100644
--- a/linux-core/drm_irq.c
+++ b/linux-core/drm_irq.c
@@ -183,7 +183,7 @@ int drm_irq_install(struct drm_device * dev)
 
 	if (dev->irq_enabled) {
 		mutex_unlock(&dev->struct_mutex);
-		return -EBUSY;
+		return 0;
 	}
 	dev->irq_enabled = 1;
 	mutex_unlock(&dev->struct_mutex);