diff options
Diffstat (limited to 'drivers/block/xsysace.c')
| -rw-r--r-- | drivers/block/xsysace.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c index ac278ac908d..b71888b909a 100644 --- a/drivers/block/xsysace.c +++ b/drivers/block/xsysace.c @@ -89,6 +89,7 @@ #include <linux/delay.h> #include <linux/slab.h> #include <linux/blkdev.h> +#include <linux/smp_lock.h> #include <linux/ata.h> #include <linux/hdreg.h> #include <linux/platform_device.h> @@ -901,11 +902,14 @@ static int ace_open(struct block_device *bdev, fmode_t mode) dev_dbg(ace->dev, "ace_open() users=%i\n", ace->users + 1); + lock_kernel(); spin_lock_irqsave(&ace->lock, flags); ace->users++; spin_unlock_irqrestore(&ace->lock, flags); check_disk_change(bdev); + unlock_kernel(); + return 0; } @@ -917,6 +921,7 @@ static int ace_release(struct gendisk *disk, fmode_t mode) dev_dbg(ace->dev, "ace_release() users=%i\n", ace->users - 1); + lock_kernel(); spin_lock_irqsave(&ace->lock, flags); ace->users--; if (ace->users == 0) { @@ -924,6 +929,7 @@ static int ace_release(struct gendisk *disk, fmode_t mode) ace_out(ace, ACE_CTRL, val & ~ACE_CTRL_LOCKREQ); } spin_unlock_irqrestore(&ace->lock, flags); + unlock_kernel(); return 0; } |