[PATCH 09/19] xsysace: simplify media change handling

From: Christoph Hellwig
Date: Wed Sep 02 2020 - 10:46:45 EST


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@xxxxxx>
---
drivers/block/xsysace.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)

diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index eefe542f2d9fff..8d581c7536fb51 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -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");
-
- if (ace->media_change) {
- dev_dbg(ace->dev, "requesting cf id and scheduling tasklet\n");
+ 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);
--
2.28.0