linux-kernel - [PATCH] regmap: Don't attempt block writes when syncing cache on single

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Date:	Wed, 27 Aug 2014 13:09:39 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Jarkko Nikula <jarkko.nikula@...ux.intel.com>
Cc:	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	Mark Brown <broonie@...aro.org>
Subject: [PATCH] regmap: Don't attempt block writes when syncing cache on single_rw devices

From: Mark Brown <broonie@...aro.org>

If the device can't support block writes then don't attempt to use raw
syncing which will automatically generate block writes for adjacent
registers, use the existing _single() block syncing implementation.

Reported-by: Jarkko Nikula <jarkko.nikula@...ux.intel.com>
Signed-off-by: Mark Brown <broonie@...aro.org>
---
 drivers/base/regmap/regcache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 29b4128da0b0..5617da6dc898 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -698,7 +698,7 @@ int regcache_sync_block(struct regmap *map, void *block,
 			unsigned int block_base, unsigned int start,
 			unsigned int end)
 {
-	if (regmap_can_raw_write(map))
+	if (regmap_can_raw_write(map) && !map->use_single_rw)
 		return regcache_sync_block_raw(map, block, cache_present,
 					       block_base, start, end);
 	else
-- 
2.1.0

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