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authorChristoph Hellwig <hch@lst.de>2020-09-08 16:53:34 +0200
committerJens Axboe <axboe@kernel.dk>2020-09-10 09:32:30 -0600
commit433d21ce313e93200cd0938aa717639c8098d45f (patch)
tree5a809510e149d53c5b58b1f470461cc4e1e3288d /drivers/block/swim.c
parent7fe76fc04bd1b551b8c712249c921facfd98a11b (diff)
swim: simplify media change handling
floppy_revalidate mostly duplicates work already done in floppy_open despite only beeing called from floppy_open. Remove the function and just clear the ->ejected flag directly under the right condition. 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>
Diffstat (limited to 'drivers/block/swim.c')
-rw-r--r--drivers/block/swim.c24
1 files changed, 2 insertions, 22 deletions
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index d4565c555b28..52dd1efa00f9 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -217,8 +217,6 @@ extern int swim_read_sector_header(struct swim __iomem *base,
extern int swim_read_sector_data(struct swim __iomem *base,
unsigned char *data);
-static int floppy_revalidate(struct gendisk *disk);
-
static DEFINE_MUTEX(swim_mutex);
static inline void set_swim_mode(struct swim __iomem *base, int enable)
{
@@ -640,8 +638,8 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
return 0;
if (mode & (FMODE_READ|FMODE_WRITE)) {
- if (bdev_check_media_change(bdev))
- floppy_revalidate(bdev->bd_disk);
+ if (bdev_check_media_change(bdev) && fs->disk_in)
+ fs->ejected = 0;
if ((mode & FMODE_WRITE) && fs->write_protected) {
err = -EROFS;
goto out;
@@ -738,24 +736,6 @@ static unsigned int floppy_check_events(struct gendisk *disk,
return fs->ejected ? DISK_EVENT_MEDIA_CHANGE : 0;
}
-static int floppy_revalidate(struct gendisk *disk)
-{
- struct floppy_state *fs = disk->private_data;
- struct swim __iomem *base = fs->swd->base;
-
- swim_drive(base, fs->location);
-
- if (fs->ejected)
- setup_medium(fs);
-
- if (!fs->disk_in)
- swim_motor(base, OFF);
- else
- fs->ejected = 0;
-
- return !fs->disk_in;
-}
-
static const struct block_device_operations floppy_fops = {
.owner = THIS_MODULE,
.open = floppy_unlocked_open,