linux-kernel - [PATCH] regmap: cache: Remove unused 'blksize' variable

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Date:   Thu, 24 Nov 2016 16:51:17 -0800
From:   Kirtika Ruchandani <kirtika@...omium.org>
To:     arnd@...db.de, Mark Brown <broonie@...nel.org>
Cc:     Kirtika Ruchandani <kirtika@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org,
        Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
        Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH] regmap: cache: Remove unused 'blksize' variable

Commit 2cbbb579bcbe ("regmap: Add the LZO cache support") introduced
'blksize' in  regcache_lzo_read() and regcache_lzo_write(), that is
set but not used. Compiling with W=1 gives the following warnings,
fix them.

drivers/base/regmap/regcache-lzo.c: In function ‘regcache_lzo_read’:
drivers/base/regmap/regcache-lzo.c:239:9: warning: variable ‘blksize’ set but not used [-Wunused-but-set-variable]
  size_t blksize, tmp_dst_len;
         ^
drivers/base/regmap/regcache-lzo.c: In function ‘regcache_lzo_write’:
drivers/base/regmap/regcache-lzo.c:278:9: warning: variable ‘blksize’ set but not used [-Wunused-but-set-variable]
  size_t blksize, tmp_dst_len;
         ^

These are harmless warnings and are only being fixed to reduce the
noise with W=1 in the kernel.

Fixes: 2cbbb579bcbe ("regmap: Add the LZO cache support")
Cc: Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>
Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Signed-off-by: Kirtika Ruchandani <kirtika@...omium.org>
---
 drivers/base/regmap/regcache-lzo.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c
index 6f77d73..4ff3113 100644
--- a/drivers/base/regmap/regcache-lzo.c
+++ b/drivers/base/regmap/regcache-lzo.c
@@ -236,15 +236,13 @@ static int regcache_lzo_read(struct regmap *map,
 {
 	struct regcache_lzo_ctx *lzo_block, **lzo_blocks;
 	int ret, blkindex, blkpos;
-	size_t blksize, tmp_dst_len;
+	size_t tmp_dst_len;
 	void *tmp_dst;
 
 	/* index of the compressed lzo block */
 	blkindex = regcache_lzo_get_blkindex(map, reg);
 	/* register index within the decompressed block */
 	blkpos = regcache_lzo_get_blkpos(map, reg);
-	/* size of the compressed block */
-	blksize = regcache_lzo_get_blksize(map);
 	lzo_blocks = map->cache;
 	lzo_block = lzo_blocks[blkindex];
 
@@ -275,15 +273,13 @@ static int regcache_lzo_write(struct regmap *map,
 {
 	struct regcache_lzo_ctx *lzo_block, **lzo_blocks;
 	int ret, blkindex, blkpos;
-	size_t blksize, tmp_dst_len;
+	size_t tmp_dst_len;
 	void *tmp_dst;
 
 	/* index of the compressed lzo block */
 	blkindex = regcache_lzo_get_blkindex(map, reg);
 	/* register index within the decompressed block */
 	blkpos = regcache_lzo_get_blkpos(map, reg);
-	/* size of the compressed block */
-	blksize = regcache_lzo_get_blksize(map);
 	lzo_blocks = map->cache;
 	lzo_block = lzo_blocks[blkindex];
 
-- 
2.8.0.rc3.226.g39d4020