[PATCH] dpt_i2o: fix waitqueue abuse

The driver plays with waitqueue internals and fails to compile after Ben's
"aio: make wait_queue ->task ->private" patch.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 9cc0015..a699c30 100644 (file)
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -1126,11 +1126,11 @@ static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
        struct adpt_i2o_post_wait_data *p1, *p2;
        struct adpt_i2o_post_wait_data *wait_data =
                kmalloc(sizeof(struct adpt_i2o_post_wait_data),GFP_KERNEL);
-       adpt_wait_queue_t wait;
+       DECLARE_WAITQUEUE(wait, current);
 
-       if(!wait_data){
+       if (!wait_data)
                return -ENOMEM;
-       }
+
        /*
         * The spin locking is needed to keep anyone from playing
         * with the queue pointers and id while we do the same
@@ -1148,12 +1148,7 @@ static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
        wait_data->wq = &adpt_wq_i2o_post;
        wait_data->status = -ETIMEDOUT;
 
-       // this code is taken from kernel/sched.c:interruptible_sleep_on_timeout
-       wait.task = current;
-       init_waitqueue_entry(&wait, current);
-       spin_lock_irqsave(&adpt_wq_i2o_post.lock, flags);
-       __add_wait_queue(&adpt_wq_i2o_post, &wait);
-       spin_unlock(&adpt_wq_i2o_post.lock);
+       add_wait_queue(&adpt_wq_i2o_post, &wait);
 
        msg[2] |= 0x80000000 | ((u32)wait_data->id);
        timeout *= HZ;
@@ -1175,9 +1170,7 @@ static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
                if(pHba->host)
                        spin_lock_irq(pHba->host->host_lock);
        }
-       spin_lock_irq(&adpt_wq_i2o_post.lock);
-       __remove_wait_queue(&adpt_wq_i2o_post, &wait);
-       spin_unlock_irqrestore(&adpt_wq_i2o_post.lock, flags);
+       remove_wait_queue(&adpt_wq_i2o_post, &wait);
 
        if(status == -ETIMEDOUT){
                printk(KERN_INFO"dpti%d: POST WAIT TIMEOUT\n",pHba->unit);