[PATCH 4.9 040/310] bus: brcmstb_gisb: Use register offsets with writes too

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Doug Berger <opendmb@xxxxxxxxx>


[ Upstream commit 856c7ccb9ce7a061f04bdf586f649cb93654e294 ]

This commit corrects the bug introduced in commit f80835875d3d
("bus: brcmstb_gisb: Look up register offsets in a table") such
that gisb_write() translates the register enumeration into an
offset from the base address for writes as well as reads.

Fixes: f80835875d3d ("bus: brcmstb_gisb: Look up register offsets in a table")
Signed-off-by: Doug Berger <opendmb@xxxxxxxxx>
Acked-by: Gregory Fong <gregory.0xf0@xxxxxxxxx>
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/bus/brcmstb_gisb.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/bus/brcmstb_gisb.c
+++ b/drivers/bus/brcmstb_gisb.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2014 Broadcom Corporation
+ * Copyright (C) 2014-2017 Broadcom
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -127,9 +127,9 @@ static void gisb_write(struct brcmstb_gi
 		return;
 
 	if (gdev->big_endian)
-		iowrite32be(val, gdev->base + reg);
+		iowrite32be(val, gdev->base + offset);
 	else
-		iowrite32(val, gdev->base + reg);
+		iowrite32(val, gdev->base + offset);
 }
 
 static ssize_t gisb_arb_get_timeout(struct device *dev,