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authorGustavo A. R. Silva <gustavo@embeddedor.com>2018-10-10 17:13:13 +0200
committerLinus Walleij <linus.walleij@linaro.org>2018-10-12 11:14:38 +0200
commit4fe81669df50889ff1072c030c59df5f1fa6534e (patch)
tree63196408e0988bff9187192c68c1dec94338a5ed /drivers/pinctrl
parenta85c928f6a7856a09e47d9b37faa3407c7ac6a8e (diff)
downloadlinux-4fe81669df50889ff1072c030c59df5f1fa6534e.tar.bz2
pinctrl: madera: Fix uninitialized variable bug in madera_mux_set_mux
There is a potential execution path in which variable *ret* is checked in an IF statement, and then its value is used to report an error at line 659 without being properly initialized previously: 659 if (ret) 660 dev_err(priv->dev, "Failed to write to 0x%x (%d)\n", reg, ret); Fix this by initializing variable *ret* to 0 in order to avoid unpredictable or unintended results. Addresses-Coverity-ID: 1471969 ("Uninitialized scalar variable") Fixes: 218d72a77b0b ("pinctrl: madera: Add driver for Cirrus Logic Madera codecs") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/cirrus/pinctrl-madera-core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pinctrl/cirrus/pinctrl-madera-core.c b/drivers/pinctrl/cirrus/pinctrl-madera-core.c
index 0266302ae2cf..a5dda832024a 100644
--- a/drivers/pinctrl/cirrus/pinctrl-madera-core.c
+++ b/drivers/pinctrl/cirrus/pinctrl-madera-core.c
@@ -608,7 +608,7 @@ static int madera_mux_set_mux(struct pinctrl_dev *pctldev,
unsigned int n_chip_groups = priv->chip->n_pin_groups;
const char *func_name = madera_mux_funcs[selector].name;
unsigned int reg;
- int i, ret;
+ int i, ret = 0;
dev_dbg(priv->dev, "%s selecting %u (%s) for group %u (%s)\n",
__func__, selector, func_name, group,