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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-01-02 16:12:50 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-01-02 16:12:50 +0100
commit631de3708d595d153e8a510a3608689290f4c0ed (patch)
treedbecf12cccac76e89cf1908f80b4f515cada731e /include/linux
parentb2cfb05a701809abee591265a198afa029d68bff (diff)
ide: add ide_[un]lock_hwgroup() helpers
Add ide_[un]lock_hwgroup() inline helpers for obtaining exclusive access to the given hwgroup and update the core code accordingly. [ This change besides making code saner results in more efficient use of ide_{get,release}_lock(). ] Cc: Michael Schmitz <schmitz@biophys.uni-duesseldorf.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Elias Oltmanns <eo@nebensachen.de> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/ide.h20
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 968ca8f6053..f408d6123f1 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1280,6 +1280,26 @@ extern void ide_stall_queue(ide_drive_t *drive, unsigned long timeout);
extern void ide_timer_expiry(unsigned long);
extern irqreturn_t ide_intr(int irq, void *dev_id);
+
+static inline int ide_lock_hwgroup(ide_hwgroup_t *hwgroup)
+{
+ if (hwgroup->busy)
+ return 1;
+
+ hwgroup->busy = 1;
+ /* for atari only */
+ ide_get_lock(ide_intr, hwgroup);
+
+ return 0;
+}
+
+static inline void ide_unlock_hwgroup(ide_hwgroup_t *hwgroup)
+{
+ /* for atari only */
+ ide_release_lock();
+ hwgroup->busy = 0;
+}
+
extern void do_ide_request(struct request_queue *);
void ide_init_disk(struct gendisk *, ide_drive_t *);