From 4a106627be1f6a70e13d4fb65866f69591b64ade Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@infradead.org>
Date: Thu, 17 Jul 2008 23:28:31 -0300
Subject: backport commit cad84238056babf4e4e6b0de183238224aab8177

From: Mauro Carvalho Chehab <mchehab@infradead.org>

Author: Arnd Bergmann <arnd@arndb.de>
    Date:   Tue May 20 19:16:12 2008 +0200

    media-radio-miropcm20-rds: BKL pushdown

kernel-sync:

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---
 linux/drivers/media/radio/miropcm20-rds.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/linux/drivers/media/radio/miropcm20-rds.c b/linux/drivers/media/radio/miropcm20-rds.c
index 295381795..af90cdcf2 100644
--- a/linux/drivers/media/radio/miropcm20-rds.c
+++ b/linux/drivers/media/radio/miropcm20-rds.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/fs.h>
 #include <linux/miscdevice.h>
 #include <linux/delay.h>
@@ -27,13 +28,16 @@ static int rds_f_open(struct inode *in, struct file *fi)
 	if (rds_users)
 		return -EBUSY;
 
+	lock_kernel();
 	rds_users++;
 	if ((text_buffer=kmalloc(66, GFP_KERNEL)) == 0) {
 		rds_users--;
 		printk(KERN_NOTICE "aci-rds: Out of memory by open()...\n");
+		unlock_kernel();
 		return -ENOMEM;
 	}
 
+	unlock_kernel();
 	return 0;
 }
 
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