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[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>
This commit is contained in:
Andrew Morton 2005-06-23 00:10:26 -07:00 committed by Linus Torvalds
parent 152becd26e
commit 4452ea509e
1 changed files with 5 additions and 12 deletions
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17
drivers/scsi/dpt_i2o.c
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@ -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);