Replaced mpt3sas_base_flush_reply_queues()with
mpt3sas_base_sync_reply_irqs(),as mpt3sas_base_flush_reply_queues()
skips over reply queues that are currently busy (i.e. being handled
by interrupt processing in another core). If a reply queue is busy,
then call to synchronize_irq()in mpt3sas_base_sync_reply_irqs()make
sures the other core has finished flushing the queue and completed
any calls to the mid-layer scsi_done() routine.
Signed-off-by: Chaitra P B <chaitra.basappa@xxxxxxxxxxxx>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 15 +++++++--------
drivers/scsi/mpt3sas/mpt3sas_base.h | 3 ++-
drivers/scsi/mpt3sas/mpt3sas_scsih.c | 4 +++-
3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 4e9142f..fd9002d 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -1103,18 +1103,16 @@ _base_is_controller_msix_enabled(struct MPT3SAS_ADAPTER *ioc)
}
/**
- * mpt3sas_base_flush_reply_queues - flushing the MSIX reply queues
+ * mpt3sas_base_sync_reply_irqs - flush pending MSIX interrupts
* @ioc: per adapter object
- * Context: ISR conext
+ * Context: non ISR conext
*
- * Called when a Task Management request has completed. We want
- * to flush the other reply queues so all the outstanding IO has been
- * completed back to OS before we process the TM completetion.
+ * Called when a Task Management request has completed.
*
* Return nothing.
*/
void
-mpt3sas_base_flush_reply_queues(struct MPT3SAS_ADAPTER *ioc)
+mpt3sas_base_sync_reply_irqs(struct MPT3SAS_ADAPTER *ioc)
{
struct adapter_reply_queue *reply_q;
@@ -1125,12 +1123,13 @@ mpt3sas_base_flush_reply_queues(struct MPT3SAS_ADAPTER *ioc)
return;
list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
- if (ioc->shost_recovery)
+ if (ioc->shost_recovery || ioc->remove_host ||
+ ioc->pci_error_recovery)
return;
/* TMs are on msix_index == 0 */
if (reply_q->msix_index == 0)
continue;
- _base_interrupt(reply_q->vector, (void *)reply_q);
+ synchronize_irq(reply_q->vector);
}
}
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.h b/drivers/scsi/mpt3sas/mpt3sas_base.h
index e1befba..1a614d7 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.h
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.h
@@ -1236,7 +1236,8 @@ void *mpt3sas_base_get_msg_frame(struct MPT3SAS_ADAPTER *ioc, u16 smid);
void *mpt3sas_base_get_sense_buffer(struct MPT3SAS_ADAPTER *ioc, u16 smid);
__le32 mpt3sas_base_get_sense_buffer_dma(struct MPT3SAS_ADAPTER *ioc,
u16 smid);
-void mpt3sas_base_flush_reply_queues(struct MPT3SAS_ADAPTER *ioc);
+
+void mpt3sas_base_sync_reply_irqs(struct MPT3SAS_ADAPTER *ioc);
/* hi-priority queue */
u16 mpt3sas_base_get_smid_hpr(struct MPT3SAS_ADAPTER *ioc, u8 cb_idx);
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index abd8717..928214f 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -2126,7 +2126,6 @@ _scsih_tm_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
return 1;
if (ioc->tm_cmds.smid != smid)
return 1;
- mpt3sas_base_flush_reply_queues(ioc);
ioc->tm_cmds.status |= MPT3_CMD_COMPLETE;
mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
if (mpi_reply) {
@@ -2311,6 +2310,9 @@ mpt3sas_scsih_issue_tm(struct MPT3SAS_ADAPTER *ioc, u16 handle, uint channel,
}
}
+ /* sync IRQs in case those were busy during flush. */
+ mpt3sas_base_sync_reply_irqs(ioc);
+
if (ioc->tm_cmds.status & MPT3_CMD_REPLY_VALID) {
mpt3sas_trigger_master(ioc, MASTER_TRIGGER_TASK_MANAGMENT);
mpi_reply = ioc->tm_cmds.reply;
--
1.8.3.1
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