ide: use mutex instead of ide_cfg_sem semaphore in IDE driver
The IDE driver uses a semaphore as mutex.
Use the mutex API instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 3717a32..14ac7c2 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -169,7 +169,7 @@
static int idebus_parameter; /* holds the "idebus=" parameter */
static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */
-DECLARE_MUTEX(ide_cfg_sem);
+DEFINE_MUTEX(ide_cfg_mtx);
__cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock);
#ifdef CONFIG_IDEPCI_PCIBUS_ORDER
@@ -564,7 +564,7 @@
{
ide_drive_t *drive;
ide_hwif_t *hwif, *g;
- static ide_hwif_t tmp_hwif; /* protected by ide_cfg_sem */
+ static ide_hwif_t tmp_hwif; /* protected by ide_cfg_mtx */
ide_hwgroup_t *hwgroup;
int irq_count = 0, unit;
@@ -572,7 +572,7 @@
BUG_ON(in_interrupt());
BUG_ON(irqs_disabled());
- down(&ide_cfg_sem);
+ mutex_lock(&ide_cfg_mtx);
spin_lock_irq(&ide_lock);
hwif = &ide_hwifs[index];
if (!hwif->present)
@@ -679,7 +679,7 @@
abort:
spin_unlock_irq(&ide_lock);
- up(&ide_cfg_sem);
+ mutex_unlock(&ide_cfg_mtx);
}
EXPORT_SYMBOL(ide_unregister);