diff options
author | Arnd Bergmann <arnd@arndb.de> | 2010-06-02 12:28:52 (GMT) |
---|---|---|
committer | Arnd Bergmann <arnd@arndb.de> | 2010-10-05 13:01:10 (GMT) |
commit | 2a48fc0ab24241755dc93bfd4f01d68efab47f5a (patch) | |
tree | fa9ae10ce89b26b7d8ae9ce24bdfda5e3007b763 /drivers/block/swim3.c | |
parent | 613655fa39ff6957754fa8ceb8559980920eb8ee (diff) | |
download | linux-fsl-qoriq-2a48fc0ab24241755dc93bfd4f01d68efab47f5a.tar.xz |
block: autoconvert trivial BKL users to private mutex
The block device drivers have all gained new lock_kernel
calls from a recent pushdown, and some of the drivers
were already using the BKL before.
This turns the BKL into a set of per-driver mutexes.
Still need to check whether this is safe to do.
file=$1
name=$2
if grep -q lock_kernel ${file} ; then
if grep -q 'include.*linux.mutex.h' ${file} ; then
sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
else
sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
fi
sed -i ${file} \
-e "/^#include.*linux.mutex.h/,$ {
1,/^\(static\|int\|long\)/ {
/^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);
} }" \
-e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
-e '/[ ]*cycle_kernel_lock();/d'
else
sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \
-e '/cycle_kernel_lock()/d'
fi
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/block/swim3.c')
-rw-r--r-- | drivers/block/swim3.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c index cc6a386..bf3a5b8 100644 --- a/drivers/block/swim3.c +++ b/drivers/block/swim3.c @@ -25,7 +25,7 @@ #include <linux/ioctl.h> #include <linux/blkdev.h> #include <linux/interrupt.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/module.h> #include <linux/spinlock.h> #include <asm/io.h> @@ -36,6 +36,7 @@ #include <asm/machdep.h> #include <asm/pmac_feature.h> +static DEFINE_MUTEX(swim3_mutex); static struct request_queue *swim3_queue; static struct gendisk *disks[2]; static struct request *fd_req; @@ -873,9 +874,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode, { int ret; - lock_kernel(); + mutex_lock(&swim3_mutex); ret = floppy_locked_ioctl(bdev, mode, cmd, param); - unlock_kernel(); + mutex_unlock(&swim3_mutex); return ret; } @@ -953,9 +954,9 @@ static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode) { int ret; - lock_kernel(); + mutex_lock(&swim3_mutex); ret = floppy_open(bdev, mode); - unlock_kernel(); + mutex_unlock(&swim3_mutex); return ret; } @@ -964,13 +965,13 @@ static int floppy_release(struct gendisk *disk, fmode_t mode) { struct floppy_state *fs = disk->private_data; struct swim3 __iomem *sw = fs->swim3; - lock_kernel(); + mutex_lock(&swim3_mutex); if (fs->ref_count > 0 && --fs->ref_count == 0) { swim3_action(fs, MOTOR_OFF); out_8(&sw->control_bic, 0xff); swim3_select(fs, RELAX); } - unlock_kernel(); + mutex_unlock(&swim3_mutex); return 0; } |