From a076230134f3083a58cef99e48b127818ef01e7a Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 20 May 2008 19:15:30 +0200
Subject: [PATCH] agp-frontend: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/char/agp/frontend.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index 857b26227d87..963eff28fa00 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -39,6 +39,7 @@
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/sched.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include "agp.h"
@@ -677,6 +678,7 @@ static int agp_open(struct inode *inode, struct file *file)
struct agp_client *client;
int rc = -ENXIO;
+ lock_kernel();
mutex_lock(&(agp_fe.agp_mutex));
if (minor != AGPGART_MINOR)
@@ -703,12 +705,14 @@ static int agp_open(struct inode *inode, struct file *file)
agp_insert_file_private(priv);
DBG("private=%p, client=%p", priv, client);
mutex_unlock(&(agp_fe.agp_mutex));
+ unlock_kernel();
return 0;
err_out_nomem:
rc = -ENOMEM;
err_out:
mutex_unlock(&(agp_fe.agp_mutex));
+ unlock_kernel();
return rc;
}
--
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