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Diffstat (limited to 'drivers/block/hd.c')
-rw-r--r--drivers/block/hd.c17
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/block/hd.c b/drivers/block/hd.c
index 3c11f062a18c..baaa9e486e50 100644
--- a/drivers/block/hd.c
+++ b/drivers/block/hd.c
@@ -509,7 +509,6 @@ ok_to_write:
if (i > 0) {
SET_HANDLER(&write_intr);
outsw(HD_DATA, req->buffer, 256);
- local_irq_enable();
} else {
#if (HD_DELAY > 0)
last_req = read_timer();
@@ -541,8 +540,7 @@ static void hd_times_out(unsigned long dummy)
if (!CURRENT)
return;
- disable_irq(HD_IRQ);
- local_irq_enable();
+ spin_lock_irq(hd_queue->queue_lock);
reset = 1;
name = CURRENT->rq_disk->disk_name;
printk("%s: timeout\n", name);
@@ -552,9 +550,8 @@ static void hd_times_out(unsigned long dummy)
#endif
end_request(CURRENT, 0);
}
- local_irq_disable();
hd_request();
- enable_irq(HD_IRQ);
+ spin_unlock_irq(hd_queue->queue_lock);
}
static int do_special_op(struct hd_i_struct *disk, struct request *req)
@@ -592,7 +589,6 @@ static void hd_request(void)
return;
repeat:
del_timer(&device_timer);
- local_irq_enable();
req = CURRENT;
if (!req) {
@@ -601,7 +597,6 @@ repeat:
}
if (reset) {
- local_irq_disable();
reset_hd();
return;
}
@@ -660,9 +655,7 @@ repeat:
static void do_hd_request(struct request_queue *q)
{
- disable_irq(HD_IRQ);
hd_request();
- enable_irq(HD_IRQ);
}
static int hd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
@@ -684,12 +677,16 @@ static irqreturn_t hd_interrupt(int irq, void *dev_id)
{
void (*handler)(void) = do_hd;
+ spin_lock(hd_queue->queue_lock);
+
do_hd = NULL;
del_timer(&device_timer);
if (!handler)
handler = unexpected_hd_interrupt;
handler();
- local_irq_enable();
+
+ spin_unlock(hd_queue->queue_lock);
+
return IRQ_HANDLED;
}