From: Jakub Byczkowski <jakub.byczkowski@intel.com>
Date: Thu, 4 May 2017 12:13:58 +0000 (-0700)
Subject: IB/hfi1: Fix checks for Offline transient state
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=02d1008bcf41c7eada7882df673ae3794f7bfea8;p=linux.git

IB/hfi1: Fix checks for Offline transient state

In goto_offline() function pstate is masked by 0xff when compared
to PLS_OFFLINE state. Mask should be 0xf0, since upper 4 bits
specify the "major" state.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---

diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c
index 0f6916d2d5499..c96bb3a0c7889 100644
--- a/drivers/infiniband/hw/hfi1/chip.c
+++ b/drivers/infiniband/hw/hfi1/chip.c
@@ -10233,7 +10233,7 @@ static int goto_offline(struct hfi1_pportdata *ppd, u8 rem_reason)
 	if (pstate == PLS_OFFLINE) {
 		do_transition = 0;	/* in right state */
 		do_wait = 0;		/* ...no need to wait */
-	} else if ((pstate & 0xff) == PLS_OFFLINE) {
+	} else if ((pstate & 0xf0) == PLS_OFFLINE) {
 		do_transition = 0;	/* in an offline transient state */
 		do_wait = 1;		/* ...wait for it to settle */
 	} else {