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[SCSI] isci: No task_done callbacks in error handler paths. 

libsas will cleanup pending sas_tasks after error handler
path functions are called; do not call task_done callbacks.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jeff Skirvin 2011-10-27 15:05:11 -07:00 committed by James Bottomley
parent b343dff1a2
commit db49c2d037
1 changed files with 14 additions and 55 deletions
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69
drivers/scsi/isci/task.c
View File

@ -585,53 +585,6 @@ static enum isci_request_status isci_task_validate_request_to_abort(
return old_state;
}
/**
* isci_request_cleanup_completed_loiterer() - This function will take care of
* the final cleanup on any request which has been explicitly terminated.
* @isci_host: This parameter specifies the ISCI host object
* @isci_device: This is the device to which the request is pending.
* @isci_request: This parameter specifies the terminated request object.
* @task: This parameter is the libsas I/O request.
*/
static void isci_request_cleanup_completed_loiterer(
struct isci_host *isci_host,
struct isci_remote_device *isci_device,
struct isci_request *isci_request,
struct sas_task *task)
{
unsigned long flags;
dev_dbg(&isci_host->pdev->dev,
"%s: isci_device=%p, request=%p, task=%p\n",
__func__, isci_device, isci_request, task);
if (task != NULL) {
spin_lock_irqsave(&task->task_state_lock, flags);
task->lldd_task = NULL;
task->task_state_flags &= ~SAS_TASK_NEED_DEV_RESET;
isci_set_task_doneflags(task);
/* If this task is not in the abort path, call task_done. */
if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
spin_unlock_irqrestore(&task->task_state_lock, flags);
task->task_done(task);
} else
spin_unlock_irqrestore(&task->task_state_lock, flags);
}
if (isci_request != NULL) {
spin_lock_irqsave(&isci_host->scic_lock, flags);
isci_free_tag(isci_host, isci_request->io_tag);
isci_request_change_state(isci_request, unallocated);
list_del_init(&isci_request->dev_node);
spin_unlock_irqrestore(&isci_host->scic_lock, flags);
}
}
static int isci_request_is_dealloc_managed(enum isci_request_status stat)
{
switch (stat) {
@ -666,7 +619,6 @@ static void isci_terminate_request_core(struct isci_host *ihost,
unsigned long flags;
unsigned long termination_completed = 1;
struct completion *io_request_completion;
struct sas_task *task;
dev_dbg(&ihost->pdev->dev,
"%s: device = %p; request = %p\n",
@ -676,10 +628,6 @@ static void isci_terminate_request_core(struct isci_host *ihost,
io_request_completion = isci_request->io_request_completion;
task = (isci_request->ttype == io_task)
? isci_request_access_task(isci_request)
: NULL;
/* Note that we are not going to control
* the target to abort the request.
*/
@ -783,9 +731,20 @@ static void isci_terminate_request_core(struct isci_host *ihost,
spin_unlock_irqrestore(&isci_request->state_lock, flags);
}
if (needs_cleanup_handling)
isci_request_cleanup_completed_loiterer(
ihost, idev, isci_request, task);
if (needs_cleanup_handling) {
dev_dbg(&ihost->pdev->dev,
"%s: cleanup isci_device=%p, request=%p\n",
__func__, idev, isci_request);
if (isci_request != NULL) {
spin_lock_irqsave(&ihost->scic_lock, flags);
isci_free_tag(ihost, isci_request->io_tag);
isci_request_change_state(isci_request, unallocated);
list_del_init(&isci_request->dev_node);
spin_unlock_irqrestore(&ihost->scic_lock, flags);
}
}
}
}