staging: Convert to bdops->check_events()

Convert two staging drivers - blkvsc_drv and cyasblkdev_block - from
->media_changed() to ->check_events().  The former always indicated
media changed while the latter always indicated media not changed.
Not sure what the drivers are trying to achieve but keep the original
behavior.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kay Sievers <kay.sievers@vrfy.org>

2 files changed, 14 insertions, 8 deletions

diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 4fb809485d9e..1ecd7e17f571 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -131,7 +131,8 @@ static void blkvsc_shutdown(struct device *device);
 
 static int blkvsc_open(struct block_device *bdev,  fmode_t mode);
 static int blkvsc_release(struct gendisk *disk, fmode_t mode);
-static int blkvsc_media_changed(struct gendisk *gd);
+static unsigned int blkvsc_check_events(struct gendisk *gd,
+                                        unsigned int clearing);
 static int blkvsc_revalidate_disk(struct gendisk *gd);
 static int blkvsc_getgeo(struct block_device *bd, struct hd_geometry *hg);
 static int blkvsc_ioctl(struct block_device *bd, fmode_t mode,
@@ -162,7 +163,7 @@ static const struct block_device_operations block_ops = {
         .owner = THIS_MODULE,
         .open = blkvsc_open,
         .release = blkvsc_release,
-        .media_changed = blkvsc_media_changed,
+        .check_events = blkvsc_check_events,
         .revalidate_disk = blkvsc_revalidate_disk,
         .getgeo = blkvsc_getgeo,
         .ioctl  = blkvsc_ioctl,
@@ -367,6 +368,7 @@ static int blkvsc_probe(struct device *device)
         else
                 blkdev->gd->first_minor = 0;
         blkdev->gd->fops = &block_ops;
+        blkdev->gd->events = DISK_EVENT_MEDIA_CHANGE;
         blkdev->gd->private_data = blkdev;
         blkdev->gd->driverfs_dev = &(blkdev->device_ctx->device);
         sprintf(blkdev->gd->disk_name, "hd%c", 'a' + devnum);
@@ -1352,10 +1354,11 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode)
         return 0;
 }
 
-static int blkvsc_media_changed(struct gendisk *gd)
+static unsigned int blkvsc_check_events(struct gendisk *gd,
+                                        unsigned int clearing)
 {
         DPRINT_DBG(BLKVSC_DRV, "- enter\n");
-        return 1;
+        return DISK_EVENT_MEDIA_CHANGE;
 }
 
 static int blkvsc_revalidate_disk(struct gendisk *gd)
diff --git a/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c b/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c
index e1851f00be56..842cd9214a5e 100644
--- a/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c
+++ b/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c
@@ -381,10 +381,10 @@ static int cyasblkdev_blk_ioctl(
         return -ENOTTY;
 }
 
-/* Media_changed block_device opp
+/* check_events block_device opp
  * this one is called by kernel to confirm if the media really changed
  * as we indicated by issuing check_disk_change() call */
-int cyasblkdev_media_changed(struct gendisk *gd)
+unsigned int cyasblkdev_check_events(struct gendisk *gd, unsigned int clearing)
 {
         struct cyasblkdev_blk_data *bd;
 
@@ -402,7 +402,7 @@ int cyasblkdev_media_changed(struct gendisk *gd)
                 #endif
         }
 
-        /* return media change state "1" yes, 0 no */
+        /* return media change state - DISK_EVENT_MEDIA_CHANGE yes, 0 no */
         return 0;
 }
 
@@ -432,7 +432,7 @@ static struct block_device_operations cyasblkdev_bdops = {
         .ioctl                  = cyasblkdev_blk_ioctl,
         /* .getgeo              = cyasblkdev_blk_getgeo, */
         /* added to support media removal( real and simulated) media */
-        .media_changed  = cyasblkdev_media_changed,
+        .check_events           = cyasblkdev_check_events,
         /* added to support media removal( real and simulated) media */
         .revalidate_disk = cyasblkdev_revalidate_disk,
         .owner                  = THIS_MODULE,
@@ -1090,6 +1090,7 @@ static int cyasblkdev_add_disks(int bus_num,
                 bd->user_disk_0->first_minor = devidx << CYASBLKDEV_SHIFT;
                 bd->user_disk_0->minors = 8;
                 bd->user_disk_0->fops = &cyasblkdev_bdops;
+                bd->user_disk_0->events = DISK_EVENT_MEDIA_CHANGE;
                 bd->user_disk_0->private_data = bd;
                 bd->user_disk_0->queue = bd->queue.queue;
                 bd->dbgprn_flags = DBGPRN_RD_RQ;
@@ -1190,6 +1191,7 @@ static int cyasblkdev_add_disks(int bus_num,
                 bd->user_disk_1->first_minor = (devidx + 1) << CYASBLKDEV_SHIFT;
                 bd->user_disk_1->minors = 8;
                 bd->user_disk_1->fops = &cyasblkdev_bdops;
+                bd->user_disk_0->events = DISK_EVENT_MEDIA_CHANGE;
                 bd->user_disk_1->private_data = bd;
                 bd->user_disk_1->queue = bd->queue.queue;
                 bd->dbgprn_flags = DBGPRN_RD_RQ;
@@ -1278,6 +1280,7 @@ static int cyasblkdev_add_disks(int bus_num,
                                 (devidx + 2) << CYASBLKDEV_SHIFT;
                         bd->system_disk->minors = 8;
                         bd->system_disk->fops = &cyasblkdev_bdops;
+                        bd->system_disk->events = DISK_EVENT_MEDIA_CHANGE;
                         bd->system_disk->private_data = bd;
                         bd->system_disk->queue = bd->queue.queue;
                         /* don't search for vfat