pinctrl: qcom-spmi-mpp: Fix input value report

Fix interpretation of the pmic_mpp_read() return code,
negative value means an error.

Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
index 890df16..211b942 100644 (file)
--- a/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-spmi-mpp.c
@@ -577,10 +577,11 @@ static void pmic_mpp_config_dbg_show(struct pinctrl_dev *pctldev,
 
                if (pad->input_enabled) {
                        ret = pmic_mpp_read(state, pad, PMIC_MPP_REG_RT_STS);
-                       if (!ret) {
-                               ret &= PMIC_MPP_REG_RT_STS_VAL_MASK;
-                               pad->out_value = ret;
-                       }
+                       if (ret < 0)
+                               return;
+
+                       ret &= PMIC_MPP_REG_RT_STS_VAL_MASK;
+                       pad->out_value = ret;
                }
 
                seq_printf(s, " %-4s", pad->output_enabled ? "out" : "in");