qla2xxx: Pause risc before manipulating risc semaphore.

Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>

diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index f64bb6b7a08f44de825e9008ebba25ef102d6adb..014f44f7a7c44689ec4b023287a25da05e2c7bed 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1282,6 +1282,9 @@ qla25xx_manipulate_risc_semaphore(scsi_qla_host_t *vha)
            vha->hw->pdev->subsystem_device != 0x0240)
                return;
 
+       WRT_REG_DWORD(&vha->hw->iobase->isp24.hccr, HCCRX_SET_RISC_PAUSE);
+       udelay(100);
+
 attempt:
        timeout_msec = TIMEOUT_SEMAPHORE;
        n = timeout_msec / delta_msec;