From: Dan Carpenter <dan.carpenter@oracle.com>
To: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] regulator: lp3972: Silence uninitialized variable warning
Date: Thu, 14 Apr 2016 09:34:07 +0000 [thread overview]
Message-ID: <20160414093407.GE16549@mwanda> (raw)
This is harmless but my static checker complains that "tmp" is
uninitialized if lp3972_i2c_read() fails. I have moved the line of code
below the error handling to silence the warning.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/regulator/lp3972.c b/drivers/regulator/lp3972.c
index 3a7e96e..ff0c275 100644
--- a/drivers/regulator/lp3972.c
+++ b/drivers/regulator/lp3972.c
@@ -211,8 +211,8 @@ static int lp3972_set_bits(struct lp3972 *lp3972, u8 reg, u16 mask, u16 val)
mutex_lock(&lp3972->io_lock);
ret = lp3972_i2c_read(lp3972->i2c, reg, 1, &tmp);
- tmp = (tmp & ~mask) | val;
if (ret = 0) {
+ tmp = (tmp & ~mask) | val;
ret = lp3972_i2c_write(lp3972->i2c, reg, 1, &tmp);
dev_dbg(lp3972->dev, "reg write 0x%02x -> 0x%02x\n", (int)reg,
(unsigned)val & 0xff);
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] regulator: lp3972: Silence uninitialized variable warning
Date: Thu, 14 Apr 2016 12:34:07 +0300 [thread overview]
Message-ID: <20160414093407.GE16549@mwanda> (raw)
This is harmless but my static checker complains that "tmp" is
uninitialized if lp3972_i2c_read() fails. I have moved the line of code
below the error handling to silence the warning.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/regulator/lp3972.c b/drivers/regulator/lp3972.c
index 3a7e96e..ff0c275 100644
--- a/drivers/regulator/lp3972.c
+++ b/drivers/regulator/lp3972.c
@@ -211,8 +211,8 @@ static int lp3972_set_bits(struct lp3972 *lp3972, u8 reg, u16 mask, u16 val)
mutex_lock(&lp3972->io_lock);
ret = lp3972_i2c_read(lp3972->i2c, reg, 1, &tmp);
- tmp = (tmp & ~mask) | val;
if (ret == 0) {
+ tmp = (tmp & ~mask) | val;
ret = lp3972_i2c_write(lp3972->i2c, reg, 1, &tmp);
dev_dbg(lp3972->dev, "reg write 0x%02x -> 0x%02x\n", (int)reg,
(unsigned)val & 0xff);
next reply other threads:[~2016-04-14 9:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-14 9:34 Dan Carpenter [this message]
2016-04-14 9:34 ` [patch] regulator: lp3972: Silence uninitialized variable warning Dan Carpenter
2016-04-18 13:10 ` Applied "regulator: lp3972: Silence uninitialized variable warning" to the regulator tree Mark Brown
2016-04-18 13:10 ` Mark Brown
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