diff options
| author | Vikas Chaudhary <vikas.chaudhary@qlogic.com> | 2011-05-18 06:17:07 (GMT) |
|---|---|---|
| committer | James Bottomley <jbottomley@parallels.com> | 2011-05-24 16:39:42 (GMT) |
| commit | 0160ef12693cf1614f602051474792c5b71c639f (patch) | |
| tree | 363c3dc7edcc9e6a5777235927af52245fd9412b /drivers/scsi | |
| parent | 6d78bd56be54286a72413db82d87fc371867629f (diff) | |
| download | linux-fsl-qoriq-0160ef12693cf1614f602051474792c5b71c639f.tar.xz | |
[SCSI] qla4xxx: Don't process mbx interrupt unconditionally
Do not process interrupt unconditionally during mailbox processing which can
lead to spurious interrupt. Mailbox completion are now polled if interrupt are
disabled or wait for interrupt to come in if its enabled
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')
| -rw-r--r-- | drivers/scsi/qla4xxx/ql4_mbx.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_mbx.c b/drivers/scsi/qla4xxx/ql4_mbx.c index d78b58d..b768a03 100644 --- a/drivers/scsi/qla4xxx/ql4_mbx.c +++ b/drivers/scsi/qla4xxx/ql4_mbx.c @@ -86,22 +86,8 @@ int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount, msleep(10); } - /* To prevent overwriting mailbox registers for a command that has - * not yet been serviced, check to see if an active command - * (AEN, IOCB, etc.) is interrupting, then service it. - * ----------------------------------------------------------------- - */ spin_lock_irqsave(&ha->hardware_lock, flags); - if (!is_qla8022(ha)) { - intr_status = readl(&ha->reg->ctrl_status); - if (intr_status & CSR_SCSI_PROCESSOR_INTR) { - /* Service existing interrupt */ - ha->isp_ops->interrupt_service_routine(ha, intr_status); - clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags); - } - } - ha->mbox_status_count = outCount; for (i = 0; i < outCount; i++) ha->mbox_status[i] = 0; |