From: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
while processing the stop firmware mailbox command on driver unload,
a interrupt is processed which causes kernel panic as the response
queue is not valid.
Fix is to clear the interrupt in free_adapter call just after
disabling the interrupts.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@xxxxxxxxxx>
---
drivers/scsi/qla4xxx/ql4_os.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index fa1a359..f06b7c5 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -3487,6 +3487,15 @@ static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
ha->isp_ops->disable_intrs(ha);
}
+ if (is_qla40XX(ha)) {
+ writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
+ &ha->reg->ctrl_status);
+ readl(&ha->reg->ctrl_status);
+ } else if (is_qla8022(ha)) {
+ writel(0, &ha->qla4_8xxx_reg->host_int);
+ readl(&ha->qla4_8xxx_reg->host_int);
+ }
+
/* Remove timer thread, if present */
if (ha->timer_active)
qla4xxx_stop_timer(ha);
--
1.7.8.GIT
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