From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
commit 4ff0f034e95d65f8f063a362dfcf86e986377a82 upstream.
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: ae75ff814538 ("pinctrl: pinctrl-imx: add imx pinctrl core driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/freescale/pinctrl-imx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index f244676..6f806f9 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -365,7 +365,7 @@ 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;
}
--
2.1.0
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