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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-25 00:53:15 +0400 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-25 00:53:15 +0400 |
| commit | 08da591e14cf87247ec09b17c350235157a92fc3 (patch) | |
| tree | d00a02154071c7013c31bc8dd1d3c12c86d5daca /drivers/ide/ide-disk.c | |
| parent | 6cdf6eb357c2681596b7b1672b92396ba82333d4 (diff) | |
| download | linux-08da591e14cf87247ec09b17c350235157a92fc3.tar.xz | |
ide: add ide_device_{get,put}() helpers
* Add 'struct ide_host *host' field to ide_hwif_t and set it
in ide_host_alloc_all().
* Add ide_device_{get,put}() helpers loosely based on SCSI's
scsi_device_{get,put}() ones.
* Convert IDE device drivers to use ide_device_{get,put}().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-disk.c')
| -rw-r--r-- | drivers/ide/ide-disk.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index df5fe5756871..28d85b410f7c 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -56,23 +56,29 @@ static DEFINE_MUTEX(idedisk_ref_mutex); #define ide_disk_g(disk) \ container_of((disk)->private_data, struct ide_disk_obj, driver) +static void ide_disk_release(struct kref *); + static struct ide_disk_obj *ide_disk_get(struct gendisk *disk) { struct ide_disk_obj *idkp = NULL; mutex_lock(&idedisk_ref_mutex); idkp = ide_disk_g(disk); - if (idkp) + if (idkp) { kref_get(&idkp->kref); + if (ide_device_get(idkp->drive)) { + kref_put(&idkp->kref, ide_disk_release); + idkp = NULL; + } + } mutex_unlock(&idedisk_ref_mutex); return idkp; } -static void ide_disk_release(struct kref *); - static void ide_disk_put(struct ide_disk_obj *idkp) { mutex_lock(&idedisk_ref_mutex); + ide_device_put(idkp->drive); kref_put(&idkp->kref, ide_disk_release); mutex_unlock(&idedisk_ref_mutex); } |