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s390/scm: remove superfluous lock

Forráskód böngészése 
Remove the spinlock from struct scm_device. drvdata and attributes
are guarded via device_lock.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott
2012-09-04 19:36:41 +02:00
committed by Martin Schwidefsky
szülő 50ab9a9a60
commit c3e6d407c0
3 fájl változott, egészen pontosan 3 új sor hozzáadva és 16 régi sor törölve
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11
drivers/s390/block/scm_drv.c
Fájl megtekintése

@@ -9,7 +9,6 @@
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <asm/eadm.h>
#include "scm_blk.h"
@@ -37,15 +36,10 @@ static int scm_probe(struct scm_device *scmdev)
if (!bdev)
return -ENOMEM;
spin_lock_irq(&scmdev->lock);
dev_set_drvdata(&scmdev->dev, bdev);
spin_unlock_irq(&scmdev->lock);
ret = scm_blk_dev_setup(bdev, scmdev);
if (ret) {
spin_lock_irq(&scmdev->lock);
dev_set_drvdata(&scmdev->dev, NULL);
spin_unlock_irq(&scmdev->lock);
kfree(bdev);
goto out;
}
@@ -56,12 +50,9 @@ out:
static int scm_remove(struct scm_device *scmdev)
{
struct scm_blk_dev *bdev;
struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev);
spin_lock_irq(&scmdev->lock);
bdev = dev_get_drvdata(&scmdev->dev);
dev_set_drvdata(&scmdev->dev, NULL);
spin_unlock_irq(&scmdev->lock);
scm_blk_dev_cleanup(bdev);
kfree(bdev);