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5fcface659
linux/drivers/gpio
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Taiping Lai 5fcface659 gpio: sprd: Clear interrupt when setting the type as edge 
The raw interrupt status of GPIO maybe set before the interrupt is enabled,
which would trigger the interrupt event once enabled it from user side.
This is the case for edge interrupts only. Adding a clear operation when
setting interrupt type can avoid that.

There're a few considerations for the solution:
1) This issue is for edge interrupt only; The interrupts requested by users
   are IRQ_TYPE_LEVEL_HIGH as default, so clearing interrupt when request
   is useless.
2) The interrupt type can be set to edge when request and following up
   with clearing it though, but the problem is still there once users set
   the interrupt type to level trggier.
3) We can add a clear operation after each time of setting interrupt
   enable bit, but it is redundant for level trigger interrupt.

Therefore, the solution is this patch seems the best for now.

Fixes: 9a3821c2bb ("gpio: Add GPIO driver for Spreadtrum SC9860 platform")
Signed-off-by: Taiping Lai <taiping.lai@unisoc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2020-08-31 18:06:28 +02:00
..
gpio-74x164.c gpio: 74x164: utilize the for_each_set_clump8 macro 2019-12-04 19:44:12 -08:00
gpio-74xx-mmio.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-104-dio-48e.c gpio: 104-dio-48e: Use irqchip template 2020-07-23 15:09:26 +02:00
gpio-104-idi-48.c gpio: 104-idi-48: Use irqchip template 2020-07-23 15:09:54 +02:00
gpio-104-idio-16.c gpio: 104-idio-16: Use irqchip template 2020-07-23 15:10:25 +02:00
gpio-adnp.c gpio: adnp: Use irqchip template 2020-07-20 15:34:59 +02:00
gpio-adp5520.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149 2019-05-30 11:25:18 -07:00
gpio-adp5588.c gpio: adp5588: Use irqchip template 2020-07-20 15:47:50 +02:00
gpio-aggregator.c gpio: aggregator: Use bitmap_parselist() for parsing GPIO offsets 2020-07-07 14:30:27 +02:00
gpio-altera-a10sr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-altera.c gpio: gpio-altera: Add missing kerneldoc entry and demote comment 2020-07-08 09:24:07 +02:00
gpio-amd8111.c
gpio-amd-fch.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-amdpt.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-arizona.c gpio: arizona: put pm_runtime in case of failure 2020-06-16 10:38:07 +02:00
gpio-aspeed-sgpio.c gpio: aspeed-sgpio: fixed typos 2020-01-23 16:16:05 +01:00
gpio-aspeed.c gpio: aspeed-sgpio: fixed typos 2020-01-23 16:16:05 +01:00
gpio-ath79.c gpio: ath79: use devm_platform_ioremap_resource() 2019-10-09 18:20:19 +02:00
gpio-bcm-kona.c gpio: bcm-kona: Fix return value of bcm_kona_gpio_probe() 2020-05-25 11:17:18 +02:00
gpio-bd9571mwv.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-bd70528.c This is the bulk of GPIO changes for the v5.5 kernel cycle 2019-12-01 17:56:50 -08:00
gpio-bd71828.c gpio: bd71828: Remove unneeded defines for GPIO_LINE_DIRECTION_IN/OUT 2020-02-10 10:55:18 +01:00
gpio-brcmstb.c gpio: brcmstb: support gpio-line-names property 2020-03-26 00:02:03 +01:00
gpio-bt8xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
gpio-cadence.c gpio: cadence: Pass irqchip when adding gpiochip 2019-08-15 09:44:19 +02:00
gpio-clps711x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-creg-snps.c gpio: aspeed-sgpio: fixed typos 2020-01-23 16:16:05 +01:00
gpio-crystalcove.c gpio: crystalcove: Free IRQ on error path 2020-08-04 01:25:02 +02:00
gpio-cs5535.c docs: driver-model: move it to the driver-api book 2019-07-15 11:03:02 -03:00
gpio-da9052.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-da9055.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gpio-davinci.c gpio: Unconditionally assign .request()/.free() 2020-04-02 09:16:06 +02:00
gpio-dln2.c gpio: dln2: Use irqchip template 2020-07-23 15:03:25 +02:00
gpio-dwapb.c gpio: dwapb: Remove unneeded has_irq member in struct dwapb_port_property 2020-05-25 11:05:09 +02:00
gpio-eic-sprd.c Revert "gpio: eic-sprd: Use devm_platform_ioremap_resource()" 2020-04-02 09:39:09 +02:00
gpio-em.c gpio: em: Use platform_get_irq() to obtain interrupts 2019-11-13 13:47:48 +01:00
gpio-ep93xx.c gpio: ep93xx: Pass irqchip when adding gpiochip 2019-09-04 10:59:10 +02:00
gpio-exar.c gpio: exar: Fix bad handling for ida_simple_get error path 2020-05-05 18:24:56 +02:00
gpio-f7188x.c gpio-f7188x: Add GPIO support for F81865 2020-05-05 18:22:26 +02:00
gpio-ftgpio010.c gpio: ftgpio010: Fix small typo 2020-04-28 15:50:28 +02:00
gpio-ge.c gpio: ge: Fix build warning 2018-05-16 14:35:24 +02:00
gpio-gpio-mm.c gpio: gpio-mm: utilize for_each_set_clump8 macro 2019-12-04 19:44:12 -08:00
gpio-grgpio.c gpio: Remove the unused flags 2020-01-15 11:24:19 +01:00
gpio-gw-pld.c gpio: Add a Gateworks PLD GPIO driver 2019-02-09 11:33:37 +01:00
gpio-hlwd.c gpio: hlwd: Pass irqchip when adding gpiochip 2019-08-15 09:57:29 +02:00
gpio-htc-egpio.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-ich.c gpio: ich: changed every 'unsigned' to 'unsigned int' 2020-07-22 16:00:27 +03:00
gpio-intel-mid.c gpio: intel-mid: Move hardware initialization to callback 2019-10-15 01:18:51 +02:00
gpio-iop.c Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
gpio-it87.c gpio: gpio-it87: Fix formatting issues which confuse kerneldoc 2020-07-08 09:24:08 +02:00
gpio-ixp4xx.c gpio: updates for v5.4 2019-09-03 16:04:19 +02:00
gpio-janz-ttl.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-kempld.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-logicvc.c gpio: Add support for the Xylon LogiCVC GPIOs 2019-12-13 09:50:29 +01:00
gpio-loongson1.c drivers: gpio: loongon1: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-loongson.c MIPS: Loongson64: Rename CPU TYPES 2019-10-31 15:03:10 -07:00
gpio-lp873x.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-lp3943.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
gpio-lp87565.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-lpc18xx.c drivers: gpio: lpc18xx: use devm_platform_ioremap_resource() 2019-04-05 00:04:26 +07:00
gpio-lpc32xx.c gpio: lpc32xx: allow building on non-lpc32xx targets 2019-08-15 21:33:07 +02:00
gpio-madera.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-max730x.c gpio: max730x: bring gpiochip_add_data after port config 2020-05-22 17:01:25 +02:00
gpio-max732x.c gpio: max732x: Use irqchip template 2020-08-04 01:12:43 +02:00
gpio-max3191x.c gpio: max3191x: utilize the for_each_set_clump8 macro 2019-12-04 19:44:13 -08:00
gpio-max7300.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max7301.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-max77620.c gpio: max77620: Use helper variable and clarify 2020-07-17 14:03:38 +02:00
gpio-max77650.c gpio: max77650: add MODULE_ALIAS() 2019-07-29 00:03:52 +02:00
gpio-mb86s7x.c gpio: mb86s7x: Remove superfluous test for ACPI companion 2020-05-18 09:15:16 +02:00
gpio-mc9s08dz60.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
gpio-mc33880.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
gpio-menz127.c drivers: mcb: use symbol namespaces 2019-11-03 19:54:53 +01:00
gpio-merrifield.c gpio: merrifield: Better show how GPIO and IRQ bases are derived from hardware 2020-04-16 20:41:06 +03:00
gpio-ml-ioh.c gpio: gpio-ml-ioh: Fix missing ':' in 'struct ioh_gpio_reg_data 2020-06-30 17:00:11 +03:00
gpio-mlxbf2.c gpio: gpio-mlxbf2.c: Provide __releases() annotation to stop confusing Sparse 2020-07-08 09:24:08 +02:00
gpio-mlxbf.c gpio: gpio-mlxbf: Tell the compiler that ACPI functions may not be used 2020-07-08 09:24:08 +02:00
gpio-mm-lantiq.c gpio: mm-lantiq: Fix small typo 2020-04-28 22:41:25 +02:00
gpio-mmio.c gpio: mmio: replace open-coded for_each_set_bit() 2020-07-16 15:07:18 +02:00
gpio-mockup.c genirq/irq_sim: Simplify the API 2020-05-18 10:30:21 +01:00
gpio-moxtet.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-mpc8xxx.c gpio: mpc8xxx: change the gpio interrupt flags. 2020-06-15 10:14:37 +02:00
gpio-mpc5200.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
gpio-msic.c gpio: msic: Convert to use SPDX identifier 2019-02-08 15:55:41 +02:00
gpio-mt7621.c gpio: mt7621: add BGPIOF_NO_SET_ON_INPUT flag 2020-03-25 09:50:45 +01:00
gpio-mvebu.c gpio: mvebu: Make use of for_each_requested_gpio() 2020-06-20 23:13:27 +02:00
gpio-mxc.c gpio: Unconditionally assign .request()/.free() 2020-04-02 09:16:06 +02:00
gpio-mxs.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-octeon.c drivers: gpio: octeon: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-omap.c gpio: omap: Fix warnings if PM is disabled 2020-08-19 18:16:16 +02:00
gpio-palmas.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-pca953x.c gpio: pca953x: Request IRQ after all initialisation done 2020-08-04 01:25:02 +02:00
gpio-pca9570.c gpio: pca9570: add GPO driver for PCA9570 2020-07-16 14:35:12 +02:00
gpio-pcf857x.c gpio: pcf857x: Use irqchip template 2020-07-20 15:56:40 +02:00
gpio-pch.c gpio: pch: Add a blank line between declaration and code 2020-07-21 19:12:57 +03:00
gpio-pci-idio-16.c gpio: pci-idio-16: Use irqchip template 2020-07-23 15:11:26 +02:00
gpio-pcie-idio-24.c gpio: pcie-idio-24: Use irqchip template 2020-07-23 15:10:55 +02:00
gpio-pisosr.c gpio: pisosr: utilize the for_each_set_clump8 macro 2019-12-04 19:44:13 -08:00
gpio-pl061.c gpio: pl061: Support building as module 2020-04-14 16:23:46 +02:00
gpio-pmic-eic-sprd.c gpio: gpio-pmic-eic-sprd: Fix incorrectly named property 'map' 2020-07-08 09:24:07 +02:00
gpio-pxa.c gpio: pxa: Fix return value of pxa_gpio_probe() 2020-05-25 11:14:36 +02:00
gpio-raspberrypi-exp.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-rc5t583.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
gpio-rcar.c gpio: rcar: Use irqchip template 2020-07-30 00:13:10 +02:00
gpio-rda.c gpio: Add RDA Micro GPIO controller support 2019-10-29 15:12:52 +01:00
gpio-rdc321x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
gpio-reg.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-regmap.c gpio: add a reusable generic gpio_chip using regmap 2020-06-03 10:48:37 +02:00
gpio-sa1100.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-sama5d2-piobu.c gpio: gpio-sama5d2-piobu: Demote all kerneldoc headers to basic comment blocks 2020-07-08 09:24:07 +02:00
gpio-sch311x.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-sch.c gpio: sch: Add a blank line between declaration and code 2020-07-22 16:00:27 +03:00
gpio-sifive.c gpio: sifive: fix static checker warning 2020-02-10 13:54:17 +01:00
gpio-siox.c gpio: siox: use raw spinlock for irq related locking 2020-02-21 14:51:56 +01:00
gpio-sodaville.c gpio: sodaville: Convert to use SPDX identifier 2018-12-07 17:34:08 +02:00
gpio-spear-spics.c drivers: gpio: spear-spics: use devm_platform_ioremap_resource() 2019-04-05 00:04:27 +07:00
gpio-sprd.c gpio: sprd: Clear interrupt when setting the type as edge 2020-08-31 18:06:28 +02:00
gpio-sta2x11.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
gpio-stmpe.c gpio: stmpe: Move chip registration 2020-08-04 01:07:23 +02:00
gpio-stp-xway.c Bulk GPIO changes for the v5.3 kernel cycle: 2019-07-09 09:07:00 -07:00
gpio-syscon.c gpio: gpio-syscon: Fix formatting issues which confuse kerneldoc 2020-07-08 09:24:08 +02:00
gpio-tb10x.c gpio: remove unneeded MODULE_VERSION() usage 2019-12-12 17:09:50 +01:00
gpio-tc3589x.c gpio: tc35892: Use irqchip template 2020-07-20 15:33:34 +02:00
gpio-tegra186.c gpio: tegra186: export MODULE_DEVICE_TABLE 2020-05-05 18:18:38 +02:00
gpio-tegra.c gpio: tegra: mask GPIO IRQs during IRQ shutdown 2020-04-28 16:22:33 +02:00
gpio-thunderx.c gpio: thunderx: Switch to GPIOLIB_IRQCHIP 2020-01-15 11:18:29 +01:00
gpio-timberdale.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176 2019-05-30 11:29:19 -07:00
gpio-tpic2810.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-tps6586x.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65086.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-tps65218.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 111 2019-05-24 17:39:01 +02:00
gpio-tps65910.c gpio: tps65xxx: Use SPDX license tag 2018-09-04 08:22:47 +02:00
gpio-tps65912.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-tps68470.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-tqmx86.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-ts4800.c drivers: gpio: ts4800: use devm_platform_ioremap_resource() 2019-04-05 00:04:28 +07:00
gpio-ts4900.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-ts5500.c gpio: ts5500: Delete platform data handling 2018-09-04 08:22:47 +02:00
gpio-twl4030.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-twl6040.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-ucb1400.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-uniphier.c gpio: uniphier: Replace zero-length array with flexible-array member 2020-03-02 08:52:55 +01:00
gpio-vf610.c gpio: vf610: Pass irqchip when adding gpiochip 2019-08-23 09:41:18 +02:00
gpio-viperboard.c gpio: viperboard: Replace 'unsigned' with 'unsigned int' 2019-08-05 11:26:58 +02:00
gpio-vr41xx.c gpio: vr41xx: Use devm_platform_ioremap_resource() 2019-06-27 15:56:51 +01:00
gpio-vx855.c gpio: vx855: fixed a typo 2020-01-15 13:45:01 +01:00
gpio-wcd934x.c gpio: wcd934x: Fix logic of wcd_gpio_get 2020-02-10 10:50:58 +01:00
gpio-wcove.c gpio: wcove: Request IRQ after all initialisation done 2020-08-04 01:25:02 +02:00
gpio-winbond.c
gpio-wm831x.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wm8350.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-wm8994.c gpio: wm8xxx: Cut down on boilerplate 2018-09-17 10:55:24 -07:00
gpio-ws16c48.c gpio: ws16c48: Use irqchip template 2020-07-23 15:08:55 +02:00
gpio-xgene-sb.c gpio: xgene-sb: Drop extra check to call acpi_gpiochip_request_interrupts() 2020-05-18 09:16:31 +02:00
gpio-xgene.c gpio: Use new GPIO_LINE_DIRECTION 2019-11-07 09:27:48 +01:00
gpio-xgs-iproc.c This is the bulk of pin control changes for the v5.6 kernel cycle: 2020-01-29 09:51:36 -08:00
gpio-xilinx.c gpio: xilinx: Fix bug where the wrong GPIO register is written to 2020-02-10 12:52:34 +01:00
gpio-xlp.c gpio: xlp: Pass irqchip when adding gpiochip 2019-08-15 09:55:07 +02:00
gpio-xra1403.c gpio: xra1403: Make use of for_each_requested_gpio() 2020-06-20 23:13:27 +02:00
gpio-xtensa.c gpio: xtensa: fix driver build 2019-12-09 10:40:18 +01:00
gpio-zevio.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
gpio-zx.c gpio: Unconditionally assign .request()/.free() 2020-04-02 09:16:06 +02:00
gpio-zynq.c gpio: zynq: Remove error prints in EPROBE_DEFER 2020-06-24 12:17:12 +02:00
gpiolib-acpi.c gpiolib: acpi: Add missing __init(const) markers to initcall-s 2020-04-16 09:34:03 +02:00
gpiolib-acpi.h gpiolib: acpi: make acpi_can_fallback_to_crs() static 2019-09-10 11:34:20 +01:00
gpiolib-cdev.c gpiolib: cdev: refactor lineevent cleanup into lineevent_free 2020-07-12 10:22:01 +02:00
gpiolib-cdev.h gpiolib: split character device into gpiolib-cdev 2020-06-20 22:38:37 +02:00
gpiolib-devprop.c gpiolib: devprop: Warn if gpio-line-names is too long 2020-04-24 09:10:01 +02:00
gpiolib-devres.c gpio: don't use same lockdep class for all devm_gpiochip_add_data users 2020-08-04 01:22:02 +02:00
gpiolib-legacy.c gpio: Use SPDX header for core library 2018-09-25 09:08:48 +02:00
gpiolib-of.c This is the bulk of GPIO changes for the v5.9 kernel cycle: 2020-08-05 12:56:27 -07:00
gpiolib-of.h gpio: of: Add DT overlay support for GPIO hogs 2020-02-21 17:10:33 +01:00
gpiolib-sysfs.c gpiolib: move gpiolib-sysfs function declarations into their own header 2020-07-12 10:22:00 +02:00
gpiolib-sysfs.h gpiolib: move gpiolib-sysfs function declarations into their own header 2020-07-12 10:22:00 +02:00
gpiolib.c gpiolib: cdev: use blocking notifier call chain instead of atomic 2020-07-12 10:22:00 +02:00
gpiolib.h gpiolib: cdev: use blocking notifier call chain instead of atomic 2020-07-12 10:22:00 +02:00
Kconfig gpio: pca9570: add GPO driver for PCA9570 2020-07-16 14:35:12 +02:00
Makefile gpio: pca9570: add GPO driver for PCA9570 2020-07-16 14:35:12 +02:00
TODO drivers: gpio: Fix trivial spelling 2020-06-15 10:15:29 +02:00