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authorThomas Gleixner <tglx@linutronix.de>2009-10-16 09:42:33 +0400
committerPaul Mundt <lethal@linux-sh.org>2009-10-16 09:42:33 +0400
commit52a94909f00e0ffceeac202e517a126d57c1c523 (patch)
treeb483cbf3af528e66829a4e18bbceb9ab52a0f81b /arch/sh/boards/mach-landisk
parent5fb80ae8bd7549034845ebfba694d483070b768b (diff)
downloadlinux-52a94909f00e0ffceeac202e517a126d57c1c523.tar.xz
sh: Remove BKL from landisk gio.
The open function got the BKL via the big push down. Replace it by preempt_enable/disable as this is sufficient for an UP machine. The ioctl can be unlocked because there is no functionality which requires serialization. The usage by multiple callers is broken with and without the BKL due to the local static variable addr. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards/mach-landisk')
-rw-r--r--arch/sh/boards/mach-landisk/gio.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/sh/boards/mach-landisk/gio.c b/arch/sh/boards/mach-landisk/gio.c
index 25cdf7358000..528013188196 100644
--- a/arch/sh/boards/mach-landisk/gio.c
+++ b/arch/sh/boards/mach-landisk/gio.c
@@ -14,7 +14,6 @@
*/
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/smp_lock.h>
#include <linux/kdev_t.h>
#include <linux/cdev.h>
#include <linux/fs.h>
@@ -35,7 +34,7 @@ static int gio_open(struct inode *inode, struct file *filp)
int minor;
int ret = -ENOENT;
- lock_kernel();
+ preempt_disable();
minor = MINOR(inode->i_rdev);
if (minor < DEVCOUNT) {
if (openCnt > 0) {
@@ -45,7 +44,7 @@ static int gio_open(struct inode *inode, struct file *filp)
ret = 0;
}
}
- unlock_kernel();
+ preempt_enable();
return ret;
}
@@ -60,8 +59,7 @@ static int gio_close(struct inode *inode, struct file *filp)
return 0;
}
-static int gio_ioctl(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+static long gio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
unsigned int data;
static unsigned int addr = 0;
@@ -129,7 +127,7 @@ static const struct file_operations gio_fops = {
.owner = THIS_MODULE,
.open = gio_open, /* open */
.release = gio_close, /* release */
- .ioctl = gio_ioctl, /* ioctl */
+ .unlocked_ioctl = gio_ioctl,
};
static int __init gio_init(void)