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pinctrl: pinctrl-imx: don't use invalid value of conf_reg

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The right check for conf_reg to be invalid it testing against -1 not 0
as is done in the rest of the driver.

This fixes an oops that can be triggered by:

	cat /sys/kernel/debug/pinctrl/43fac000.iomuxc/*

Fixes: ae75ff8145 ("pinctrl: pinctrl-imx: add imx pinctrl core driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Uwe Kleine-König 2015-01-27 23:50:25 +01:00 committed by Linus Walleij
parent fc0d8fda50
commit 4ff0f034e9
1 changed files with 1 additions and 1 deletions
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2
drivers/pinctrl/freescale/pinctrl-imx.c
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@ -437,7 +437,7 @@ static void imx_pinconf_dbg_show(struct pinctrl_dev *pctldev,
const struct imx_pin_reg *pin_reg = &info->pin_regs[pin_id];
unsigned long config;
if (!pin_reg || !pin_reg->conf_reg) {
if (!pin_reg || pin_reg->conf_reg == -1) {
seq_printf(s, "N/A");
return;
}