[SCSI] qla4xxx: Use polling mode for disable interrupt mailbox completion

Disable Interrupt MBX completion will disable the interrupt on
successful completion.  Fixed the bug where driver was waiting for
Interrupt to come in for its completion.  Now driver will poll for
disable interrupt MBX completion.

Signed-off-by: Sarang Radke <sarang.radke@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/qla4xxx/ql4_nx.c b/drivers/scsi/qla4xxx/ql4_nx.c
index 3d5ef2df4134b84763a7f671fc630438844e2810..35381cb0936e751775f2e9e770f399577d810361 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_nx.c
+++ b/drivers/scsi/qla4xxx/ql4_nx.c
@@ -2304,14 +2304,13 @@ qla4_8xxx_enable_intrs(struct scsi_qla_host *ha)
 void
 qla4_8xxx_disable_intrs(struct scsi_qla_host *ha)
 {
-       if (test_bit(AF_INTERRUPTS_ON, &ha->flags))
+       if (test_and_clear_bit(AF_INTERRUPTS_ON, &ha->flags))
                qla4_8xxx_mbx_intr_disable(ha);
 
        spin_lock_irq(&ha->hardware_lock);
        /* BIT 10 - set */
        qla4_8xxx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0x0400);
        spin_unlock_irq(&ha->hardware_lock);
-       clear_bit(AF_INTERRUPTS_ON, &ha->flags);
 }
 
 struct ql4_init_msix_entry {