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authorVikas Chaudhary <vikas.chaudhary@qlogic.com>2011-05-18 08:17:07 +0200
committerJames Bottomley <jbottomley@parallels.com>2011-05-24 18:39:42 +0200
commit0160ef12693cf1614f602051474792c5b71c639f (patch)
tree363c3dc7edcc9e6a5777235927af52245fd9412b /drivers
parent[SCSI] qla4xxx: Complete the cmd if sense_len is zero (diff)
downloadlinux-0160ef12693cf1614f602051474792c5b71c639f.tar.xz
linux-0160ef12693cf1614f602051474792c5b71c639f.zip
[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')
-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 d78b58dc5011..b768a0366f7b 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;