1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index b74924b279ef..73a793539d45 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1442,7 +1442,17 @@ qla24xx_config_rings(struct scsi_qla_host *vha)
                         icb->firmware_options_2 |=
                                 __constant_cpu_to_le32(BIT_18);
 
-                icb->firmware_options_2 &= __constant_cpu_to_le32(~BIT_22);
+                /* Use Disable MSIX Handshake mode for capable adapters */
+                if (IS_MSIX_NACK_CAPABLE(ha)) {
+                        icb->firmware_options_2 &=
+                                __constant_cpu_to_le32(~BIT_22);
+                        ha->flags.disable_msix_handshake = 1;
+                        qla_printk(KERN_INFO, ha,
+                                "MSIX Handshake Disable Mode turned on\n");
+                } else {
+                        icb->firmware_options_2 |=
+                                __constant_cpu_to_le32(BIT_22);
+                }
                 icb->firmware_options_2 |= __constant_cpu_to_le32(BIT_23);
 
                 WRT_REG_DWORD(&reg->isp25mq.req_q_in, 0);