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authorVikas Chaudhary <vikas.chaudhary@qlogic.com>2011-05-17 23:17:07 -0700
committerJames Bottomley <jbottomley@parallels.com>2011-05-24 12:39:42 -0400
commit0160ef12693cf1614f602051474792c5b71c639f (patch)
tree363c3dc7edcc9e6a5777235927af52245fd9412b /drivers/scsi
parent6d78bd56be54286a72413db82d87fc371867629f (diff)
downloadop-kernel-dev-0160ef12693cf1614f602051474792c5b71c639f.zip
op-kernel-dev-0160ef12693cf1614f602051474792c5b71c639f.tar.gz
[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.c14
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;
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