diff options
| author | David Arcari <darcari@redhat.com> | 2016-10-12 18:40:30 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-10-20 14:15:01 +0200 |
| commit | 67bf5156edc4f58241fd7c119ae145c552adddd6 (patch) | |
| tree | 366bf61d4853fd14ec505a9d5cfd7ae7dad71d89 | |
| parent | 0cb940927df72a514588d8286916eda4aaa4d011 (diff) | |
| download | linux-67bf5156edc4f58241fd7c119ae145c552adddd6.tar.gz | |
gpio / ACPI: fix returned error from acpi_dev_gpio_irq_get()
acpi_dev_gpio_irq_get() currently ignores the error returned
by acpi_get_gpiod_by_index() and overwrites it with -ENOENT.
Problem is this error can be -EPROBE_DEFER, which just blows
up some drivers when the module ordering is not correct.
Cc: stable@vger.kernel.org
Signed-off-by: David Arcari <darcari@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 58ece201b8e623..72a4b326fd0da2 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -653,14 +653,17 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index) { int idx, i; unsigned int irq_flags; + int ret = -ENOENT; for (i = 0, idx = 0; idx <= index; i++) { struct acpi_gpio_info info; struct gpio_desc *desc; desc = acpi_get_gpiod_by_index(adev, NULL, i, &info); - if (IS_ERR(desc)) + if (IS_ERR(desc)) { + ret = PTR_ERR(desc); break; + } if (info.gpioint && idx++ == index) { int irq = gpiod_to_irq(desc); @@ -679,7 +682,7 @@ int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index) } } - return -ENOENT; + return ret; } EXPORT_SYMBOL_GPL(acpi_dev_gpio_irq_get); |