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Message-ID: <lsq.1539530740.639573632@decadent.org.uk>
Date: Sun, 14 Oct 2018 16:25:40 +0100
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC: akpm@...ux-foundation.org,
"Charles Keepax" <ckeepax@...nsource.cirrus.com>,
"Mark Brown" <broonie@...nel.org>
Subject: [PATCH 3.16 005/366] regmap: Correct offset handling in
regmap_volatile_range
3.16.60-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Charles Keepax <ckeepax@...nsource.cirrus.com>
commit b8f9a03b741ddfdde4aa8b607fa7d88eb63a6338 upstream.
The current implementation is broken for regmaps that have a reg_stride,
since it doesn't take the stride into account. Correct this by using the
helper function to calculate the register offset.
Fixes: f01ee60fffa4 ("regmap: implement register striding")
Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
[bwh: Backported to 3.16: Use simple multiplication instead of
regmap_get_offset()]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
drivers/base/regmap/regmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -144,7 +144,7 @@ static bool regmap_volatile_range(struct
unsigned int i;
for (i = 0; i < num; i++)
- if (!regmap_volatile(map, reg + i))
+ if (!regmap_volatile(map, reg + (i * map->reg_stride)))
return false;
return true;
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