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authorMika Westerberg <mika.westerberg@linux.intel.com>2018-09-24 17:32:12 +0300
committerLinus Walleij <linus.walleij@linaro.org>2018-09-25 12:50:00 +0200
commit72923e5488f0604fac8ef2c7e683fabd3b4c203b (patch)
treeb6b414a086e3abec185cb6aa01f86ce9c6741460 /drivers/pinctrl
parente50d95e2ad1266f8d3fcdf0724f03dbdffd400aa (diff)
downloadlinux-72923e5488f0604fac8ef2c7e683fabd3b4c203b.tar.bz2
Revert "pinctrl: intel: Do pin translation when lock IRQ"
This reverts commit 55aedef50d4d810670916d9fce4a40d5da2079e7. Commit 55aedef50d4d ("pinctrl: intel: Do pin translation when lock IRQ") added special translation from GPIO number to hardware pin number to irq_reqres/relres hooks to avoid failure when IRQs are requested. The actual failure happened inside gpiochip_lock_as_irq() because it calls gpiod_get_direction() and pinctrl-intel.c::intel_gpio_get_direction() implementation originally missed the translation so the two hooks made it work by skipping the ->get_direction() call entirely (it overwrote the default GPIOLIB provided functions). The proper fix that adds translation to GPIO callbacks was merged with commit 96147db1e1df ("pinctrl: intel: Do pin translation in other GPIO operations as well"). This allows us to use the default GPIOLIB provided functions again. In addition as find out by Benjamin Tissoires the two functions (intel_gpio_irq_reqres()/intel_gpio_irq_relres()) now cause problems of their own because they operate on pin numbers and pass that pin number to gpiochip_lock_as_irq() which actually expects a GPIO number. Link: https://bugzilla.kernel.org/show_bug.cgi?id=199911 Fixes: 55aedef50d4d ("pinctrl: intel: Do pin translation when lock IRQ") Reported-and-tested-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/intel/pinctrl-intel.c32
1 files changed, 0 insertions, 32 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index ec8dafc94694..1ea3438ea67e 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -887,36 +887,6 @@ static const struct gpio_chip intel_gpio_chip = {
.set_config = gpiochip_generic_config,
};
-static int intel_gpio_irq_reqres(struct irq_data *d)
-{
- struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct intel_pinctrl *pctrl = gpiochip_get_data(gc);
- int pin;
- int ret;
-
- pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), NULL, NULL);
- if (pin >= 0) {
- ret = gpiochip_lock_as_irq(gc, pin);
- if (ret) {
- dev_err(pctrl->dev, "unable to lock HW IRQ %d for IRQ\n",
- pin);
- return ret;
- }
- }
- return 0;
-}
-
-static void intel_gpio_irq_relres(struct irq_data *d)
-{
- struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
- struct intel_pinctrl *pctrl = gpiochip_get_data(gc);
- int pin;
-
- pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), NULL, NULL);
- if (pin >= 0)
- gpiochip_unlock_as_irq(gc, pin);
-}
-
static void intel_gpio_irq_ack(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
@@ -1132,8 +1102,6 @@ static irqreturn_t intel_gpio_irq(int irq, void *data)
static struct irq_chip intel_gpio_irqchip = {
.name = "intel-gpio",
- .irq_request_resources = intel_gpio_irq_reqres,
- .irq_release_resources = intel_gpio_irq_relres,
.irq_enable = intel_gpio_irq_enable,
.irq_ack = intel_gpio_irq_ack,
.irq_mask = intel_gpio_irq_mask,