static int pvscsi_abort(struct scsi_cmnd *cmd)
{
struct pvscsi_adapter *adapter = shost_priv(cmd->device->host);
struct pvscsi_ctx *ctx;
unsigned long flags;
scmd_printk(KERN_DEBUG, cmd, "task abort on host %u, %p\n",
adapter->host->host_no, cmd);
spin_lock_irqsave(&adapter->hw_lock, flags);
/*
* Poll the completion ring first - we might be trying to abort
* a command that is waiting to be dispatched in the completion ring.
*/
pvscsi_process_completion_ring(adapter);
/*
* If there is no context for the command, it either already succeeded
* or else was never properly issued. Not our problem.
*/
ctx = pvscsi_find_context(adapter, cmd);
if (!ctx) {
scmd_printk(KERN_DEBUG, cmd, "Failed to abort cmd %p\n", cmd);
goto out;
}
pvscsi_abort_cmd(adapter, ctx);
pvscsi_process_completion_ring(adapter);
out:
spin_unlock_irqrestore(&adapter->hw_lock, flags);
return SUCCESS;
}
static int pvscsi_abort(struct scsi_cmnd *cmd)
{
struct pvscsi_adapter *adapter = shost_priv(cmd->device->host);
struct pvscsi_ctx *ctx;
unsigned long flags;
int result = SUCCESS;
DECLARE_COMPLETION_ONSTACK(abort_cmp);
scmd_printk(KERN_DEBUG, cmd, "task abort on host %u, %p\n",
adapter->host->host_no, cmd);
spin_lock_irqsave(&adapter->hw_lock, flags);
/*
* Poll the completion ring first - we might be trying to abort
* a command that is waiting to be dispatched in the completion ring.
*/
pvscsi_process_completion_ring(adapter);
/*
* If there is no context for the command, it either already succeeded
* or else was never properly issued. Not our problem.
*/
ctx = pvscsi_find_context(adapter, cmd);
if (!ctx) {
scmd_printk(KERN_DEBUG, cmd, "Failed to abort cmd %p\n", cmd);
goto out;
}
/*
* Mark that the command has been requested to be aborted and issue
* the abort.
*/
ctx->abort_cmp = &abort_cmp;
pvscsi_abort_cmd(adapter, ctx);
spin_unlock_irqrestore(&adapter->hw_lock, flags);
/* Wait for 2 secs for the completion. */
wait_for_completion_timeout(&abort_cmp, msecs_to_jiffies(2000));
spin_lock_irqsave(&adapter->hw_lock, flags);
if (!completion_done(&abort_cmp)) {
/*
* Failed to abort the command, unmark the fact that it
* was requested to be aborted.
*/
ctx->abort_cmp = NULL;
result = FAILED;
scmd_printk(KERN_DEBUG, cmd,
"Failed to get completion for aborted cmd %p\n",
cmd);
goto out;
}
/*
* Successfully aborted the command.
*/
cmd->result = (DID_ABORT << 16);
cmd->scsi_done(cmd);
out:
spin_unlock_irqrestore(&adapter->hw_lock, flags);
return result;
}
