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bf561-coreb: BKL pushdown 

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2008-05-20 19:15:37 +02:00 committed by Jonathan Corbet
parent 52e7c5e082
commit 9a8bd2f76c
1 changed files with 4 additions and 0 deletions
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4
arch/blackfin/mach-bf561/coreb.c
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@ -32,6 +32,7 @@
#include <linux/device.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/smp_lock.h>
#include <linux/uaccess.h>
#include <linux/fs.h>
#include <asm/dma.h>
@ -196,6 +197,7 @@ static loff_t coreb_lseek(struct file *file, loff_t offset, int origin)
static int coreb_open(struct inode *inode, struct file *file)
{
lock_kernel();
spin_lock_irq(&coreb_lock);
if (coreb_status & COREB_IS_OPEN)
@ -204,10 +206,12 @@ static int coreb_open(struct inode *inode, struct file *file)
coreb_status |= COREB_IS_OPEN;
spin_unlock_irq(&coreb_lock);
unlock_kernel();
return 0;
out_busy:
spin_unlock_irq(&coreb_lock);
unlock_kernel();
return -EBUSY;
}