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>
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 386146d..4ff85b8 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1634,7 +1634,7 @@
return 0;
}
-static int floppy_release(struct gendisk *disk, fmode_t mode)
+static void floppy_release(struct gendisk *disk, fmode_t mode)
{
struct amiga_floppy_struct *p = disk->private_data;
int drive = p - unit;
@@ -1654,7 +1654,6 @@
floppy_off (drive | 0x40000000);
#endif
mutex_unlock(&amiflop_mutex);
- return 0;
}
/*
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index a129f8c..916d9ed 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -169,7 +169,7 @@
return -ENODEV;
}
-static int
+static void
aoeblk_release(struct gendisk *disk, fmode_t mode)
{
struct aoedev *d = disk->private_data;
@@ -180,11 +180,9 @@
if (--d->nopen == 0) {
spin_unlock_irqrestore(&d->lock, flags);
aoecmd_cfg(d->aoemajor, d->aoeminor);
- return 0;
+ return;
}
spin_unlock_irqrestore(&d->lock, flags);
-
- return 0;
}
static void
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index ede16c6..0e30c6e 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -367,7 +367,7 @@
static int fd_test_drive_present( int drive );
static void config_types( void );
static int floppy_open(struct block_device *bdev, fmode_t mode);
-static int floppy_release(struct gendisk *disk, fmode_t mode);
+static void floppy_release(struct gendisk *disk, fmode_t mode);
/************************* End of Prototypes **************************/
@@ -1886,7 +1886,7 @@
return ret;
}
-static int floppy_release(struct gendisk *disk, fmode_t mode)
+static void floppy_release(struct gendisk *disk, fmode_t mode)
{
struct atari_floppy_struct *p = disk->private_data;
mutex_lock(&ataflop_mutex);
@@ -1897,7 +1897,6 @@
p->ref = 0;
}
mutex_unlock(&ataflop_mutex);
- return 0;
}
static const struct block_device_operations floppy_fops = {
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index e18c991..94b51c5 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -161,7 +161,7 @@
static irqreturn_t do_cciss_msix_intr(int irq, void *dev_id);
static int cciss_open(struct block_device *bdev, fmode_t mode);
static int cciss_unlocked_open(struct block_device *bdev, fmode_t mode);
-static int cciss_release(struct gendisk *disk, fmode_t mode);
+static void cciss_release(struct gendisk *disk, fmode_t mode);
static int do_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long arg);
static int cciss_ioctl(struct block_device *bdev, fmode_t mode,
@@ -1123,7 +1123,7 @@
/*
* Close. Sync first.
*/
-static int cciss_release(struct gendisk *disk, fmode_t mode)
+static void cciss_release(struct gendisk *disk, fmode_t mode)
{
ctlr_info_t *h;
drive_info_struct *drv;
@@ -1135,7 +1135,6 @@
drv->usage_count--;
h->usage_count--;
mutex_unlock(&cciss_mutex);
- return 0;
}
static int do_ioctl(struct block_device *bdev, fmode_t mode,
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 3b9e8eb..639d26b 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -160,7 +160,7 @@
unsigned int log_unit );
static int ida_unlocked_open(struct block_device *bdev, fmode_t mode);
-static int ida_release(struct gendisk *disk, fmode_t mode);
+static void ida_release(struct gendisk *disk, fmode_t mode);
static int ida_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg);
static int ida_getgeo(struct block_device *bdev, struct hd_geometry *geo);
static int ida_ctlr_ioctl(ctlr_info_t *h, int dsk, ida_ioctl_t *io);
@@ -856,7 +856,7 @@
/*
* Close. Sync first.
*/
-static int ida_release(struct gendisk *disk, fmode_t mode)
+static void ida_release(struct gendisk *disk, fmode_t mode)
{
ctlr_info_t *host;
@@ -864,8 +864,6 @@
host = get_host(disk);
host->usage_count--;
mutex_unlock(&cpqarray_mutex);
-
- return 0;
}
/*
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index e98da67..298b868 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -63,7 +63,7 @@
int drbd_init(void);
static int drbd_open(struct block_device *bdev, fmode_t mode);
-static int drbd_release(struct gendisk *gd, fmode_t mode);
+static void drbd_release(struct gendisk *gd, fmode_t mode);
static int w_md_sync(struct drbd_work *w, int unused);
static void md_sync_timer_fn(unsigned long data);
static int w_bitmap_io(struct drbd_work *w, int unused);
@@ -1849,13 +1849,12 @@
return rv;
}
-static int drbd_release(struct gendisk *gd, fmode_t mode)
+static void drbd_release(struct gendisk *gd, fmode_t mode)
{
struct drbd_conf *mdev = gd->private_data;
mutex_lock(&drbd_main_mutex);
mdev->open_cnt--;
mutex_unlock(&drbd_main_mutex);
- return 0;
}
static void drbd_set_defaults(struct drbd_conf *mdev)
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 2ddd64a..c49e856 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3601,7 +3601,7 @@
pr_cont("\n");
}
-static int floppy_release(struct gendisk *disk, fmode_t mode)
+static void floppy_release(struct gendisk *disk, fmode_t mode)
{
int drive = (long)disk->private_data;
@@ -3615,8 +3615,6 @@
opened_bdev[drive] = NULL;
mutex_unlock(&open_lock);
mutex_unlock(&floppy_mutex);
-
- return 0;
}
/*
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index b2955b3..d92d50f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1518,7 +1518,7 @@
return err;
}
-static int lo_release(struct gendisk *disk, fmode_t mode)
+static void lo_release(struct gendisk *disk, fmode_t mode)
{
struct loop_device *lo = disk->private_data;
int err;
@@ -1535,7 +1535,7 @@
*/
err = loop_clr_fd(lo);
if (!err)
- goto out_unlocked;
+ return;
} else {
/*
* Otherwise keep thread (if running) and config,
@@ -1546,8 +1546,6 @@
out:
mutex_unlock(&lo->lo_ctl_mutex);
-out_unlocked:
- return 0;
}
static const struct block_device_operations lo_fops = {
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index ba2b6b5..e76bdc0 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -236,13 +236,12 @@
return ret;
}
-static int pcd_block_release(struct gendisk *disk, fmode_t mode)
+static void pcd_block_release(struct gendisk *disk, fmode_t mode)
{
struct pcd_unit *cd = disk->private_data;
mutex_lock(&pcd_mutex);
cdrom_release(&cd->info, mode);
mutex_unlock(&pcd_mutex);
- return 0;
}
static int pcd_block_ioctl(struct block_device *bdev, fmode_t mode,
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index 831e3ac..19ad8f0 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -783,7 +783,7 @@
}
}
-static int pd_release(struct gendisk *p, fmode_t mode)
+static void pd_release(struct gendisk *p, fmode_t mode)
{
struct pd_unit *disk = p->private_data;
@@ -791,8 +791,6 @@
if (!--disk->access && disk->removable)
pd_special_command(disk, pd_door_unlock);
mutex_unlock(&pd_mutex);
-
- return 0;
}
static unsigned int pd_check_events(struct gendisk *p, unsigned int clearing)
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index ec8f9ed..f5c86d5 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -211,7 +211,7 @@
unsigned int cmd, unsigned long arg);
static int pf_getgeo(struct block_device *bdev, struct hd_geometry *geo);
-static int pf_release(struct gendisk *disk, fmode_t mode);
+static void pf_release(struct gendisk *disk, fmode_t mode);
static int pf_detect(void);
static void do_pf_read(void);
@@ -360,14 +360,15 @@
return 0;
}
-static int pf_release(struct gendisk *disk, fmode_t mode)
+static void pf_release(struct gendisk *disk, fmode_t mode)
{
struct pf_unit *pf = disk->private_data;
mutex_lock(&pf_mutex);
if (pf->access <= 0) {
mutex_unlock(&pf_mutex);
- return -EINVAL;
+ WARN_ON(1);
+ return;
}
pf->access--;
@@ -376,8 +377,6 @@
pf_lock(pf, 0);
mutex_unlock(&pf_mutex);
- return 0;
-
}
static unsigned int pf_check_events(struct gendisk *disk, unsigned int clearing)
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index e0588c6..9f2d348 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2376,10 +2376,9 @@
return ret;
}
-static int pkt_close(struct gendisk *disk, fmode_t mode)
+static void pkt_close(struct gendisk *disk, fmode_t mode)
{
struct pktcdvd_device *pd = disk->private_data;
- int ret = 0;
mutex_lock(&pktcdvd_mutex);
mutex_lock(&ctl_mutex);
@@ -2391,7 +2390,6 @@
}
mutex_unlock(&ctl_mutex);
mutex_unlock(&pktcdvd_mutex);
- return ret;
}
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index b7b7a88..04ca496 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -411,7 +411,7 @@
return 0;
}
-static int rbd_release(struct gendisk *disk, fmode_t mode)
+static void rbd_release(struct gendisk *disk, fmode_t mode)
{
struct rbd_device *rbd_dev = disk->private_data;
unsigned long open_count_before;
@@ -424,8 +424,6 @@
mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
put_device(&rbd_dev->dev);
mutex_unlock(&ctl_mutex);
-
- return 0;
}
static const struct block_device_operations rbd_bd_ops = {
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 8766a22..2f445b7 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -673,7 +673,7 @@
return ret;
}
-static int floppy_release(struct gendisk *disk, fmode_t mode)
+static void floppy_release(struct gendisk *disk, fmode_t mode)
{
struct floppy_state *fs = disk->private_data;
struct swim __iomem *base = fs->swd->base;
@@ -687,8 +687,6 @@
if (fs->ref_count == 0)
swim_motor(base, OFF);
mutex_unlock(&swim_mutex);
-
- return 0;
}
static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 758f2ac..20e061c 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -251,7 +251,7 @@
static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long param);
static int floppy_open(struct block_device *bdev, fmode_t mode);
-static int floppy_release(struct gendisk *disk, fmode_t mode);
+static void floppy_release(struct gendisk *disk, fmode_t mode);
static unsigned int floppy_check_events(struct gendisk *disk,
unsigned int clearing);
static int floppy_revalidate(struct gendisk *disk);
@@ -1017,7 +1017,7 @@
return ret;
}
-static int floppy_release(struct gendisk *disk, fmode_t mode)
+static void floppy_release(struct gendisk *disk, fmode_t mode)
{
struct floppy_state *fs = disk->private_data;
struct swim3 __iomem *sw = fs->swim3;
@@ -1029,7 +1029,6 @@
swim3_select(fs, RELAX);
}
mutex_unlock(&swim3_mutex);
- return 0;
}
static unsigned int floppy_check_events(struct gendisk *disk,
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index a894f88..d89ef86 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -1617,7 +1617,7 @@
return err;
}
-static int blkif_release(struct gendisk *disk, fmode_t mode)
+static void blkif_release(struct gendisk *disk, fmode_t mode)
{
struct blkfront_info *info = disk->private_data;
struct block_device *bdev;
@@ -1658,7 +1658,6 @@
out:
bdput(bdev);
mutex_unlock(&blkfront_mutex);
- return 0;
}
static const struct block_device_operations xlvbd_block_fops =
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 1f38643..f8ef15f 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -915,7 +915,7 @@
return 0;
}
-static int ace_release(struct gendisk *disk, fmode_t mode)
+static void ace_release(struct gendisk *disk, fmode_t mode)
{
struct ace_device *ace = disk->private_data;
unsigned long flags;
@@ -932,7 +932,6 @@
}
spin_unlock_irqrestore(&ace->lock, flags);
mutex_unlock(&xsysace_mutex);
- return 0;
}
static int ace_getgeo(struct block_device *bdev, struct hd_geometry *geo)
diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index a22e3f8..5a95baf 100644
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -309,20 +309,18 @@
return rc;
}
-static int
+static void
z2_release(struct gendisk *disk, fmode_t mode)
{
mutex_lock(&z2ram_mutex);
if ( current_device == -1 ) {
mutex_unlock(&z2ram_mutex);
- return 0;
+ return;
}
mutex_unlock(&z2ram_mutex);
/*
* FIXME: unmap memory
*/
-
- return 0;
}
static const struct block_device_operations z2_fops =