Commit 08e4906c authored Sep 10, 2014 by Eberhard S. Amann Committed by Greg Kroah-Hartman Sep 23, 2014

GenWQE: Fix problem when reading HSI and Retc



This patch fixes a problem we found during debug on PPC64 when
reading HSI status and Retc.

Signed-off-by: Eberhard S. Amann <esa@linux.vnet.ibm.com>
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent d9c11d45

drivers/misc/genwqe/card_ddcb.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -390,8 +390,9 @@ static int genwqe_check_ddcb_queue(struct genwqe_dev *cd,
		0x00000000)
		goto go_home; /* not completed, continue waiting */

		/* Note: DDCB could be purged */
		wmb(); /* Add sync to decouple prev. read operations */

		/* Note: DDCB could be purged */
		req = queue->ddcb_req[queue->ddcb_act];
		if (req == NULL) {
		/* this occurs if DDCB is purged, not an error */