diff options
Diffstat (limited to 'drivers/staging/zram/zram_sysfs.c')
| -rw-r--r-- | drivers/staging/zram/zram_sysfs.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/staging/zram/zram_sysfs.c b/drivers/staging/zram/zram_sysfs.c index 1fae1e9ae82c..fc552d8311e1 100644 --- a/drivers/staging/zram/zram_sysfs.c +++ b/drivers/staging/zram/zram_sysfs.c @@ -95,20 +95,27 @@ static ssize_t reset_store(struct device *dev, zram = dev_to_zram(dev); bdev = bdget_disk(zram->disk, 0); + if (!bdev) + return -ENOMEM; + /* Do not reset an active device! */ - if (bdev->bd_holders) - return -EBUSY; + if (bdev->bd_holders) { + ret = -EBUSY; + goto out; + } ret = strict_strtoul(buf, 10, &do_reset); if (ret) - return ret; + goto out; - if (!do_reset) - return -EINVAL; + if (!do_reset) { + ret = -EINVAL; + goto out; + } /* Make sure all pending I/O is finished */ - if (bdev) - fsync_bdev(bdev); + fsync_bdev(bdev); + bdput(bdev); down_write(&zram->init_lock); if (zram->init_done) @@ -116,6 +123,10 @@ static ssize_t reset_store(struct device *dev, up_write(&zram->init_lock); return len; + +out: + bdput(bdev); + return ret; } static ssize_t num_reads_show(struct device *dev, |