diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0128-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0128-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0128-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch b/target/linux/bcm27xx/patches-5.4/950-0128-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch deleted file mode 100644 index bb32faef72..0000000000 --- a/target/linux/bcm27xx/patches-5.4/950-0128-gpiolib-Don-t-prevent-IRQ-usage-of-output-GPIOs.patch +++ /dev/null @@ -1,50 +0,0 @@ -From 122b21149cada59805040895f3d679ceb0e00063 Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Tue, 24 Apr 2018 14:42:27 +0100 -Subject: [PATCH] gpiolib: Don't prevent IRQ usage of output GPIOs - -Upstream Linux deems using output GPIOs to generate IRQs as a bogus -use case, even though the BCM2835 GPIO controller is capable of doing -so. A number of users would like to make use of this facility, so -disable the checks. - -See: https://github.com/raspberrypi/linux/issues/2527 - -Signed-off-by: Phil Elwell <phil@raspberrypi.org> ---- - drivers/gpio/gpiolib.c | 8 +++++--- - 1 file changed, 5 insertions(+), 3 deletions(-) - ---- a/drivers/gpio/gpiolib.c -+++ b/drivers/gpio/gpiolib.c -@@ -55,6 +55,8 @@ - #define extra_checks 0 - #endif - -+#define dont_test_bit(b,d) (0) -+ - /* Device and char device-related information */ - static DEFINE_IDA(gpio_ida); - static dev_t gpio_devt; -@@ -3091,8 +3093,8 @@ int gpiod_direction_output(struct gpio_d - value = !!value; - - /* GPIOs used for enabled IRQs shall not be set as output */ -- if (test_bit(FLAG_USED_AS_IRQ, &desc->flags) && -- test_bit(FLAG_IRQ_IS_ENABLED, &desc->flags)) { -+ if (dont_test_bit(FLAG_USED_AS_IRQ, &desc->flags) && -+ dont_test_bit(FLAG_IRQ_IS_ENABLED, &desc->flags)) { - gpiod_err(desc, - "%s: tried to set a GPIO tied to an IRQ as output\n", - __func__); -@@ -3895,8 +3897,8 @@ int gpiochip_lock_as_irq(struct gpio_chi - } - - /* To be valid for IRQ the line needs to be input or open drain */ -- if (test_bit(FLAG_IS_OUT, &desc->flags) && -- !test_bit(FLAG_OPEN_DRAIN, &desc->flags)) { -+ if (dont_test_bit(FLAG_IS_OUT, &desc->flags) && -+ !dont_test_bit(FLAG_OPEN_DRAIN, &desc->flags)) { - chip_err(chip, - "%s: tried to flag a GPIO set as output for IRQ\n", - __func__); |