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xsysace: simplify media change handling 

Pass a struct ace_device to ace_revalidate_disk, move the media changed
check into the one caller that needs it, and give the routine a better
name.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-09-08 16:53:37 +02:00 committed by Jens Axboe
parent f094225bfc
commit 77f93bfd0c
1 changed files with 10 additions and 16 deletions
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26
drivers/block/xsysace.c
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@ -888,26 +888,20 @@ static unsigned int ace_check_events(struct gendisk *gd, unsigned int clearing)
return ace->media_change ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static int ace_revalidate_disk(struct gendisk *gd)
static void ace_media_changed(struct ace_device *ace)
{
struct ace_device *ace = gd->private_data;
unsigned long flags;
dev_dbg(ace->dev, "ace_revalidate_disk()\n");
dev_dbg(ace->dev, "requesting cf id and scheduling tasklet\n");
if (ace->media_change) {
dev_dbg(ace->dev, "requesting cf id and scheduling tasklet\n");
spin_lock_irqsave(&ace->lock, flags);
ace->id_req_count++;
spin_unlock_irqrestore(&ace->lock, flags);
spin_lock_irqsave(&ace->lock, flags);
ace->id_req_count++;
spin_unlock_irqrestore(&ace->lock, flags);
tasklet_schedule(&ace->fsm_tasklet);
wait_for_completion(&ace->id_completion);
}
tasklet_schedule(&ace->fsm_tasklet);
wait_for_completion(&ace->id_completion);
dev_dbg(ace->dev, "revalidate complete\n");
return ace->id_result;
}
static int ace_open(struct block_device *bdev, fmode_t mode)
@ -922,8 +916,8 @@ static int ace_open(struct block_device *bdev, fmode_t mode)
ace->users++;
spin_unlock_irqrestore(&ace->lock, flags);
if (bdev_check_media_change(bdev))
ace_revalidate_disk(bdev->bd_disk);
if (bdev_check_media_change(bdev) && ace->media_change)
ace_media_changed(ace);
mutex_unlock(&xsysace_mutex);
return 0;
@ -1080,7 +1074,7 @@ static int ace_setup(struct ace_device *ace)
(unsigned long long) ace->physaddr, ace->baseaddr, ace->irq);
ace->media_change = 1;
ace_revalidate_disk(ace->gd);
ace_media_changed(ace);
/* Make the sysace device 'live' */
add_disk(ace->gd);