4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Douglas Anderson <dianders@xxxxxxxxxxxx>
[ Upstream commit b432414b996d32a1bd9afe2bd595bd5729c1477f ]
If you look at "pinconf-groups" in debugfs for ssbi-gpio you'll notice
it looks like nonsense.
The problem is fairly well described in commit 1cf86bc21257 ("pinctrl:
qcom: spmi-gpio: Fix pmic_gpio_config_get() to be compliant") and
commit 05e0c828955c ("pinctrl: msm: Fix msm_config_group_get() to be
compliant"), but it was pointed out that ssbi-gpio has the same
problem. Let's fix it there too.
Fixes: b4c45fe974bc ("pinctrl: qcom: ssbi: Family A gpio & mpp drivers")
Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c | 28 +++++++++++++++++++++-------
1 file changed, 21 insertions(+), 7 deletions(-)
--- a/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
+++ b/drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c
@@ -259,22 +259,32 @@ static int pm8xxx_pin_config_get(struct
switch (param) {
case PIN_CONFIG_BIAS_DISABLE:
- arg = pin->bias == PM8XXX_GPIO_BIAS_NP;
+ if (pin->bias != PM8XXX_GPIO_BIAS_NP)
+ return -EINVAL;
+ arg = 1;
break;
case PIN_CONFIG_BIAS_PULL_DOWN:
- arg = pin->bias == PM8XXX_GPIO_BIAS_PD;
+ if (pin->bias != PM8XXX_GPIO_BIAS_PD)
+ return -EINVAL;
+ arg = 1;
break;
case PIN_CONFIG_BIAS_PULL_UP:
- arg = pin->bias <= PM8XXX_GPIO_BIAS_PU_1P5_30;
+ if (pin->bias > PM8XXX_GPIO_BIAS_PU_1P5_30)
+ return -EINVAL;
+ arg = 1;
break;
case PM8XXX_QCOM_PULL_UP_STRENGTH:
arg = pin->pull_up_strength;
break;
case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
- arg = pin->disable;
+ if (!pin->disable)
+ return -EINVAL;
+ arg = 1;
break;
case PIN_CONFIG_INPUT_ENABLE:
- arg = pin->mode == PM8XXX_GPIO_MODE_INPUT;
+ if (pin->mode != PM8XXX_GPIO_MODE_INPUT)
+ return -EINVAL;
+ arg = 1;
break;
case PIN_CONFIG_OUTPUT:
if (pin->mode & PM8XXX_GPIO_MODE_OUTPUT)
@@ -289,10 +299,14 @@ static int pm8xxx_pin_config_get(struct
arg = pin->output_strength;
break;
case PIN_CONFIG_DRIVE_PUSH_PULL:
- arg = !pin->open_drain;
+ if (pin->open_drain)
+ return -EINVAL;
+ arg = 1;
break;
case PIN_CONFIG_DRIVE_OPEN_DRAIN:
- arg = pin->open_drain;
+ if (!pin->open_drain)
+ return -EINVAL;
+ arg = 1;
break;
default:
return -EINVAL;
