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authorRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>2018-10-05 08:52:59 +0200
committerLinus Walleij <linus.walleij@linaro.org>2018-10-10 10:31:57 +0200
commit6f0ec09afe278ea2a5d63f31b754db6655c69078 (patch)
tree7c7e101fcff9303678b46df7f86cc3aac34cf4b4 /drivers/pinctrl
parentf8ec92a9f63b3b11e399409141b7868bb405e6b5 (diff)
downloadlinux-6f0ec09afe278ea2a5d63f31b754db6655c69078.tar.bz2
pinctrl: msm: Use init_valid_mask exported function
The current code produces XPU violation if get_direction is called just after the initialization. Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by: Timur Tabi <timur@kernel.org> Tested-by: Jeffrey Hugo <jhugo@codeaurora.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/qcom/pinctrl-msm.c79
1 files changed, 37 insertions, 42 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index 2155a30c282b..8366b41ea609 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -566,6 +566,42 @@ static void msm_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
#define msm_gpio_dbg_show NULL
#endif
+static int msm_gpio_init_valid_mask(struct gpio_chip *chip)
+{
+ struct msm_pinctrl *pctrl = gpiochip_get_data(chip);
+ int ret;
+ unsigned int len, i;
+ unsigned int max_gpios = pctrl->soc->ngpios;
+ u16 *tmp;
+
+ /* The number of GPIOs in the ACPI tables */
+ len = ret = device_property_read_u16_array(pctrl->dev, "gpios", NULL,
+ 0);
+ if (ret < 0)
+ return 0;
+
+ if (ret > max_gpios)
+ return -EINVAL;
+
+ tmp = kmalloc_array(len, sizeof(*tmp), GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ ret = device_property_read_u16_array(pctrl->dev, "gpios", tmp, len);
+ if (ret < 0) {
+ dev_err(pctrl->dev, "could not read list of GPIOs\n");
+ goto out;
+ }
+
+ bitmap_zero(chip->valid_mask, max_gpios);
+ for (i = 0; i < len; i++)
+ set_bit(tmp[i], chip->valid_mask);
+
+out:
+ kfree(tmp);
+ return ret;
+}
+
static const struct gpio_chip msm_gpio_template = {
.direction_input = msm_gpio_direction_input,
.direction_output = msm_gpio_direction_output,
@@ -575,6 +611,7 @@ static const struct gpio_chip msm_gpio_template = {
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.dbg_show = msm_gpio_dbg_show,
+ .init_valid_mask = msm_gpio_init_valid_mask,
};
/* For dual-edge interrupts in software, since some hardware has no
@@ -831,41 +868,6 @@ static void msm_gpio_irq_handler(struct irq_desc *desc)
chained_irq_exit(chip, desc);
}
-static int msm_gpio_init_valid_mask(struct gpio_chip *chip,
- struct msm_pinctrl *pctrl)
-{
- int ret;
- unsigned int len, i;
- unsigned int max_gpios = pctrl->soc->ngpios;
- u16 *tmp;
-
- /* The number of GPIOs in the ACPI tables */
- len = ret = device_property_read_u16_array(pctrl->dev, "gpios", NULL, 0);
- if (ret < 0)
- return 0;
-
- if (ret > max_gpios)
- return -EINVAL;
-
- tmp = kmalloc_array(len, sizeof(*tmp), GFP_KERNEL);
- if (!tmp)
- return -ENOMEM;
-
- ret = device_property_read_u16_array(pctrl->dev, "gpios", tmp, len);
- if (ret < 0) {
- dev_err(pctrl->dev, "could not read list of GPIOs\n");
- goto out;
- }
-
- bitmap_zero(chip->valid_mask, max_gpios);
- for (i = 0; i < len; i++)
- set_bit(tmp[i], chip->valid_mask);
-
-out:
- kfree(tmp);
- return ret;
-}
-
static bool msm_gpio_needs_valid_mask(struct msm_pinctrl *pctrl)
{
return device_property_read_u16_array(pctrl->dev, "gpios", NULL, 0) > 0;
@@ -902,13 +904,6 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl)
return ret;
}
- ret = msm_gpio_init_valid_mask(chip, pctrl);
- if (ret) {
- dev_err(pctrl->dev, "Failed to setup irq valid bits\n");
- gpiochip_remove(&pctrl->chip);
- return ret;
- }
-
/*
* For DeviceTree-supported systems, the gpio core checks the
* pinctrl's device node for the "gpio-ranges" property.