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authorAl Viro <viro@zeniv.linux.org.uk>2013-05-05 21:52:57 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-05-07 02:16:21 -0400
commitdb2a144bedd58b3dcf19950c2f476c58c9f39d18 (patch)
tree931f1b5a8e6bafe388b317bce02a9fd9af309d38 /drivers/s390/block
parenta8ca889ed9585894d53fd8919d80cbe8baff09e7 (diff)
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block_device_operations->release() should return void
The value passed is 0 in all but "it can never happen" cases (and those only in a couple of drivers) *and* it would've been lost on the way out anyway, even if something tried to pass something meaningful. Just don't bother. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/s390/block')
-rw-r--r--drivers/s390/block/dasd.c18
-rw-r--r--drivers/s390/block/dcssblk.c12
-rw-r--r--drivers/s390/block/scm_blk.c3
3 files changed, 12 insertions, 21 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 82758cbb220..4361d9772c4 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -2997,18 +2997,14 @@ unlock:
return rc;
}
-static int dasd_release(struct gendisk *disk, fmode_t mode)
+static void dasd_release(struct gendisk *disk, fmode_t mode)
{
- struct dasd_device *base;
-
- base = dasd_device_from_gendisk(disk);
- if (!base)
- return -ENODEV;
-
- atomic_dec(&base->block->open_count);
- module_put(base->discipline->owner);
- dasd_put_device(base);
- return 0;
+ struct dasd_device *base = dasd_device_from_gendisk(disk);
+ if (base) {
+ atomic_dec(&base->block->open_count);
+ module_put(base->discipline->owner);
+ dasd_put_device(base);
+ }
}
/*
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index b6ad0de0793..07ba32b07fb 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -26,7 +26,7 @@
#define DCSS_BUS_ID_SIZE 20
static int dcssblk_open(struct block_device *bdev, fmode_t mode);
-static int dcssblk_release(struct gendisk *disk, fmode_t mode);
+static void dcssblk_release(struct gendisk *disk, fmode_t mode);
static void dcssblk_make_request(struct request_queue *q, struct bio *bio);
static int dcssblk_direct_access(struct block_device *bdev, sector_t secnum,
void **kaddr, unsigned long *pfn);
@@ -781,16 +781,15 @@ out:
return rc;
}
-static int
+static void
dcssblk_release(struct gendisk *disk, fmode_t mode)
{
struct dcssblk_dev_info *dev_info = disk->private_data;
struct segment_info *entry;
- int rc;
if (!dev_info) {
- rc = -ENODEV;
- goto out;
+ WARN_ON(1);
+ return;
}
down_write(&dcssblk_devices_sem);
if (atomic_dec_and_test(&dev_info->use_count)
@@ -803,9 +802,6 @@ dcssblk_release(struct gendisk *disk, fmode_t mode)
dev_info->save_pending = 0;
}
up_write(&dcssblk_devices_sem);
- rc = 0;
-out:
- return rc;
}
static void
diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c
index b303cab76a7..5d73e6e49af 100644
--- a/drivers/s390/block/scm_blk.c
+++ b/drivers/s390/block/scm_blk.c
@@ -123,10 +123,9 @@ static int scm_open(struct block_device *blkdev, fmode_t mode)
return scm_get_ref();
}
-static int scm_release(struct gendisk *gendisk, fmode_t mode)
+static void scm_release(struct gendisk *gendisk, fmode_t mode)
{
scm_put_ref();
- return 0;
}
static const struct block_device_operations scm_blk_devops = {