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190dc2e684
linux/drivers/gpio
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Lars-Peter Clausen 190dc2e684 gpio: zynq: Clear pending interrupt when enabling a IRQ 
The Zynq GPIO controller does not disable the interrupt detection when the
interrupt is masked and only disables the propagation of the interrupt. This
means when the controller detects an interrupt condition while the interrupt is
logically disabled (and masked) it will propagate the recorded interrupt event
once the interrupt is enabled. This will cause the interrupt consumer to see
spurious interrupts to prevent this first make sure that the interrupt is not
asserted and then enable it.

E.g. when a interrupt is requested with request_irq() it will be configured
according to the requested type (edge/level triggered, etc.) after that it will
be enabled. But the detection circuit might have already registered a false
interrupt before the interrupt type was correctly configured and once the
interrupt is unmasked this false interrupt will be propagated and the interrupt
handler for the just request interrupt will called.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-07-23 16:29:14 +02:00
..
devres.c gpio: Add helpers for optional GPIOs 2014-05-09 13:48:30 +02:00
gpio-74x164.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-adnp.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-adp5520.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-adp5588.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-amd8111.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-arizona.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-bcm-kona.c gpio: switch drivers to use new callback 2014-03-18 09:28:30 +01:00
gpio-bt8xx.c gpio: bt8xx: use devm function for memory allocation 2014-05-16 17:52:36 +02:00
gpio-clps711x.c Linux 3.14-rc6 2014-03-14 10:26:45 +01:00
gpio-cs5535.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-da9052.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-da9055.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-davinci.c gpio: davinci: remove unnecessary OOM messages 2014-05-09 10:54:39 +02:00
gpio-dwapb.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-em.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-ep93xx.c gpio: ep93xx: Use devm_ioremap_resource() 2014-05-27 16:00:58 +02:00
gpio-f7188x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-ge.c gpio: ge: Convert to platform driver 2014-04-28 12:35:09 -07:00
gpio-generic.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-grgpio.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-ich.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-intel-mid.c gpio: intel-mid: switch to using gpiolib irqchip helpers 2014-06-19 09:31:16 +02:00
gpio-iop.c gpio: iop: fix devm_ioremap_resource() return value checking 2014-03-26 10:31:34 +01:00
gpio-it8761e.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-janz-ttl.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-kempld.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-ks8695.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-lp3943.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-lpc32xx.c gpio: lpc32xx: Make of_device_id array const 2014-06-19 09:31:16 +02:00
gpio-lynxpoint.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-max730x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-max732x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-max7300.c gpio: max7300: use devm_kzalloc() 2013-03-27 16:05:11 +01:00
gpio-max7301.c gpio: max7301: Reverting "Do not force SPI speed when using OF Platform" 2013-08-23 19:44:28 +02:00
gpio-mc9s08dz60.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-mc33880.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-mcp23s08.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-ml-ioh.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-mm-lantiq.c GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio 2012-05-21 14:31:53 +01:00
gpio-moxart.c gpio: moxart: remove unnecessary OOM messages 2014-05-09 10:54:56 +02:00
gpio-mpc8xxx.c powerpc/gpio: Fix the wrong GPIO input data on MPC8572/MPC8536 2013-12-03 13:10:48 +01:00
gpio-mpc5200.c gpio: remove use of __devinit 2012-11-28 11:39:33 -08:00
gpio-msic.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-msm-v1.c gpio_msm: Fix build error due to missing err.h 2013-07-31 00:34:31 +02:00
gpio-msm-v2.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-mvebu.c gpio: mvebu: Remove initcall-based driver initialization 2014-05-09 11:08:11 +02:00
gpio-mxc.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-mxs.c gpio: mxs: Allow for recursive enable_irq_wake() call 2014-03-27 10:11:59 +01:00
gpio-octeon.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-omap.c gpio: omap: Add an omap prefix to all functions 2014-07-09 12:22:56 +02:00
gpio-palmas.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-pca953x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-pcf857x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-pch.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-pl061.c gpio: pl061: use BIT() macro instead of shifting bits 2014-05-03 12:16:24 -07:00
gpio-pxa.c gpio-pxa: gpio0 and gpio1 support on dt 2014-07-07 12:54:28 +02:00
gpio-rc5t583.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-rcar.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-rdc321x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-sa1100.c ARM: 7841/1: sa1100: remove complex GPIO interface 2013-10-29 11:01:02 +00:00
gpio-samsung.c gpio: samsung: Add missing "break" statement 2014-03-27 10:08:59 +01:00
gpio-sch311x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-sch.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-sodaville.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-spear-spics.c gpio: SPEAr: remove unnecessary OOM messages 2014-05-09 10:55:19 +02:00
gpio-sta2x11.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-stmpe.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-stp-xway.c gpio: gpio-stp-xway.c: fix checkpatch error 2013-03-27 16:05:16 +01:00
gpio-sx150x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-syscon.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-tb10x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-tc3589x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-tegra.c gpio: tegra: Make of_device_id array const 2014-05-09 11:01:53 +02:00
gpio-timberdale.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-tps6586x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-tps65910.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-tps65912.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-ts5500.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-twl4030.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-twl6040.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-tz1090-pdc.c gpio-tz1090-pdc: add TZ1090 PDC gpio driver 2013-07-20 19:03:48 +02:00
gpio-tz1090.c gpio-tz1090: Replace commas with semi-colons 2014-03-07 11:57:00 +08:00
gpio-ucb1400.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-viperboard.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-vr41xx.c gpio: vr41xx: fix up errorpath on probe() 2014-07-09 12:22:54 +02:00
gpio-vx855.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-wm831x.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-wm8350.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-wm8994.c gpio: remove all usage of gpio_remove retval in driver/gpio 2014-07-22 16:39:26 +02:00
gpio-xilinx.c gpio: xilinx: Make of_device_id array const 2014-05-09 11:03:03 +02:00
gpio-xtensa.c gpio: xtensa: fix build when XCHAL_HAVE_CP is 0 2014-02-03 09:11:45 +01:00
gpio-zevio.c gpio: zevio: Make of_device_id array const 2014-05-09 11:04:08 +02:00
gpio-zynq.c gpio: zynq: Clear pending interrupt when enabling a IRQ 2014-07-23 16:29:14 +02:00
gpiolib-acpi.c gpio / ACPI: use *_cansleep version of gpiod_get/set APIs 2014-05-23 14:36:24 +02:00
gpiolib-legacy.c gpio: move integer GPIO support to its own file 2014-07-09 12:22:57 +02:00
gpiolib-of.c gpiolib: of: Update debug messages for of_get_named_gpiod_flags 2014-07-09 12:22:58 +02:00
gpiolib-sysfs.c gpio: move sysfs support to its own file 2014-07-09 12:22:57 +02:00
gpiolib.c gpio: move integer GPIO support to its own file 2014-07-09 12:22:57 +02:00
gpiolib.h gpio: move sysfs support to its own file 2014-07-09 12:22:57 +02:00
Kconfig gpio: Add driver for Zynq GPIO controller 2014-07-10 11:11:41 +02:00
Makefile gpio: Add driver for Zynq GPIO controller 2014-07-10 11:11:41 +02:00