diff options
| author | Vikas Chaudhary <vikas.chaudhary@qlogic.com> | 2012-08-22 13:45:25 +0200 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-09-24 10:11:04 +0200 |
| commit | d9e62e513081c66d85bb0b91740ce3313c56b546 (patch) | |
| tree | db16bfaabae13660d03f5eaf7d8adff4469cb078 /drivers/scsi/qla4xxx/ql4_os.c | |
| parent | [SCSI] qla4xxx: Fix lockdep warning in qla4xxx_post_work() (diff) | |
| download | linux-d9e62e513081c66d85bb0b91740ce3313c56b546.tar.xz linux-d9e62e513081c66d85bb0b91740ce3313c56b546.zip | |
[SCSI] qla4xxx: Clear interrupt while unloading driver.
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@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_os.c')
| -rw-r--r-- | 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 fa1a3594edd5..f06b7c5b6b9a 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); |