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scsi: lpfc: Fix missing wakeups on abort threads

Abort thread wakeups, on some wqe types, are not happening. The thread wakeup logic is dependent upon the LPFC_DRIVER_ABORTED flag. However, on these wqes, the completion handler running prior to the io completion routine ends up clearing the flag. Rework the wakeup logic to look at a non-null waitq element which must be set if the abort thread is waiting. This is reverting the change in the indicated patch.

James Smart committed 7 years ago

Commit 4eb01531 parent ed2e63a1 file · +3 −4Browse files

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drivers/scsi/lpfc/lpfc_scsi.c+3−4
@@ -3878,10 +3878,9 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, · 3877 unmodified lines
3878 * wake up the thread.3878 * wake up the thread.
3879 */3879 */
3880 spin_lock(&lpfc_cmd->buf_lock);3880 spin_lock(&lpfc_cmd->buf_lock);
3881 if (unlikely(lpfc_cmd->cur_iocbq.iocb_flag & LPFC_DRIVER_ABORTED)) {3881 lpfc_cmd->cur_iocbq.iocb_flag &= ~LPFC_DRIVER_ABORTED;
3882 lpfc_cmd->cur_iocbq.iocb_flag &= ~LPFC_DRIVER_ABORTED;3882 if (lpfc_cmd->waitq) {
3883 if (lpfc_cmd->waitq)3883 wake_up(lpfc_cmd->waitq);
3884 wake_up(lpfc_cmd->waitq);
3885 lpfc_cmd->waitq = NULL;3884 lpfc_cmd->waitq = NULL;
3886 }3885 }
3887 spin_unlock(&lpfc_cmd->buf_lock);3886 spin_unlock(&lpfc_cmd->buf_lock);

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