From f75ec3010ad8d15d316f6e6d580c85f9e6b8466e Mon Sep 17 00:00:00 2001
From: Rik Faith <faith@alephnull.com>
Date: Thu, 17 Aug 2000 20:26:11 +0000
Subject: [PATCH] Bug #112196: auth.c uses semaphores while holding spinlocks
 Make spinlocked     region smaller to avoid semaphore.

---
 linux/auth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/linux/auth.c b/linux/auth.c
index 9f81c539..4556bd96 100644
--- a/linux/auth.c
+++ b/linux/auth.c
@@ -126,12 +126,12 @@ int drm_getmagic(struct inode *inode, struct file *filp, unsigned int cmd,
 	if (priv->magic) {
 		auth.magic = priv->magic;
 	} else {
-		spin_lock(&lock);
 		do {
+			spin_lock(&lock);
 			if (!sequence) ++sequence; /* reserve 0 */
 			auth.magic = sequence++;
+			spin_unlock(&lock);
 		} while (drm_find_file(dev, auth.magic));
-		spin_unlock(&lock);
 		priv->magic = auth.magic;
 		drm_add_magic(dev, priv, auth.magic);
 	}