korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-25 03:55:09 +08:00
Code Issues Packages Projects Releases Wiki Activity
897120d41e
linux/drivers/pinctrl
History
Radim Pavlik 897120d41e pinctrl: mcp23s08: fix race condition in irq handler 
Checking value of MCP_INTF in mcp23s08_irq suggests that the handler may be
called even when there is no interrupt pending.

But the actual interrupt could happened between reading MCP_INTF and MCP_GPIO.
In this situation we got nothing from MCP_INTF, but the event gets acknowledged
on the expander by reading MCP_GPIO. This leads to losing events.

Fix the problem by not reading any register until we see something in MCP_INTF.

The error was reproduced and fix tested on MCP23017.

Signed-off-by: Radim Pavlik <radim.pavlik@tbs-biometrics.com>
Link: https://lore.kernel.org/r/AM7PR06MB6769E1183F68DEBB252F665ABA3E9@AM7PR06MB6769.eurprd06.prod.outlook.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2021-06-07 00:23:58 +02:00
..
actions pinctrl: actions: Add depends on || COMPILE_TEST 2021-02-12 13:44:26 +01:00
aspeed pinctrl: pinctrl-aspeed-g6: Add sgpio pinctrl settings 2021-05-28 01:47:53 +02:00
bcm pinctrl: bcm2835: Accept fewer than expected IRQs 2021-05-28 02:56:13 +02:00
berlin
cirrus pinctrl: madera: Add missing call to pinctrl_unregister_mappings 2020-02-29 00:34:23 +01:00
freescale pinctrl: imx: Disallow driver unbind 2021-04-08 16:00:53 +02:00
intel This is the bulk of the pin control changes for the v5.13 kernel cycle 2021-04-30 13:04:30 -07:00
mediatek pinctrl: mediatek: move bit assignment 2021-05-28 11:19:10 +02:00
meson pinctrl/meson: enable building as modules 2020-11-05 14:51:38 +01:00
mvebu pinctrl: armada-cp110 - fix MPP54/MPP55 functions 2021-03-10 14:41:12 +01:00
nomadik pinctrl: nomadik: Remove unused variable in nmk_gpio_dbg_show_one 2021-01-06 00:20:14 +01:00
nuvoton pinctrl: npcm: Align a few entries in the pin function table 2021-05-25 17:10:05 +02:00
pxa pinctrl: Introduce MODE group in enum pin_config_param 2021-04-22 02:03:01 +02:00
qcom pinctrl: qcom: spmi-gpio: Add support for pm7325 2021-05-20 01:42:05 +02:00
ralink pinctrl: ralink: rt2880: fix '-Wmissing-prototypes' in init function 2021-01-04 15:40:02 +01:00
renesas pinctrl: renesas: r8a779{51,6,65}: Reduce non-functional differences 2021-05-11 10:04:42 +02:00
samsung pinctrl: samsung: use 'int' for register masks in Exynos 2021-04-10 02:06:36 +02:00
spear pinctrl/spear: simplify the return expression of spear300_pinctrl_probe() 2020-12-12 01:42:06 +01:00
sprd pinctrl: sprd: Simplify bool comparison 2021-01-18 14:41:42 +01:00
stm32 pinctrl: stm32: Print invalid AF warning inside stm32_pctrl_is_function_valid() 2021-04-08 09:52:20 +02:00
sunxi pinctrl: sunxi: Add support for the Allwinner H616-R pin controller 2021-01-21 22:15:46 +01:00
tegra This is the bulk of the pin control changes for the v5.9 2020-08-09 12:52:28 -07:00
ti pinctrl: ti: fix error return code of ti_iodelay_dt_node_to_map() 2021-04-08 15:57:14 +02:00
uniphier pinctrl: uniphier: Replace zero-length array with flexible-array member 2020-02-21 15:36:24 +01:00
visconti gpio: visconti: Add Toshiba Visconti GPIO support 2021-02-15 11:43:26 +01:00
vt8500 pinctrl: Use new GPIO_LINE_DIRECTION 2020-02-21 15:19:42 +01:00
core.c This is the bulk of the pin control changes for the v5.13 kernel cycle 2021-04-30 13:04:30 -07:00
core.h pinctrl: Allow modules to use pinctrl_[un]register_mappings 2019-12-30 14:27:17 +01:00
devicetree.c pinctrl: devicetree: Keep deferring even on timeout 2020-09-12 18:19:53 +02:00
devicetree.h
Kconfig pinctrl: Add Xilinx ZynqMP pinctrl driver support 2021-04-22 11:13:04 +02:00
Makefile pinctrl: Add Xilinx ZynqMP pinctrl driver support 2021-04-22 11:13:04 +02:00
pinconf-generic.c pinctrl: Introduce MODE group in enum pin_config_param 2021-04-22 02:03:01 +02:00
pinconf.c pinctrl: use to octal permissions for debugfs files 2021-03-10 14:41:58 +01:00
pinconf.h
pinctrl-amd.c pinctrl/amd: Add device HID for new AMD GPIO controller 2021-05-25 17:09:48 +02:00
pinctrl-amd.h pinctrl: amd: Add missing pins to the pin group list 2020-10-07 15:37:17 +02:00
pinctrl-artpec6.c pinctrl: artpec6: fix __iomem on reg in set 2020-01-07 13:57:17 +01:00
pinctrl-as3722.c
pinctrl-at91-pio4.c pinctrl: at91-pio4: Fix slew rate disablement 2021-04-13 09:42:18 +02:00
pinctrl-at91.c pinctrl: at91: Constify struct at91_pinctrl_mux_ops 2021-05-25 17:10:05 +02:00
pinctrl-at91.h
pinctrl-axp209.c pinctrl: Use new GPIO_LINE_DIRECTION 2020-02-21 15:19:42 +01:00
pinctrl-bm1880.c pinctrl: pinctrl-bm1880: Rename ill documented struct attribute entries 2020-07-16 15:13:55 +02:00
pinctrl-da850-pupd.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
pinctrl-da9062.c pinctrl: da9062: Fix error gpiolib.h path 2020-02-28 14:15:53 +01:00
pinctrl-digicolor.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
pinctrl-equilibrium.c pinctrl: equilibrium: Add missing MODULE_DEVICE_TABLE 2021-05-20 01:00:24 +02:00
pinctrl-equilibrium.h pinctrl: Add pinmux & GPIO controller driver for a new SoC 2019-11-21 14:47:44 +01:00
pinctrl-falcon.c pinctrl: falcon: add missing put_device() call in pinctrl_falcon_probe() 2020-12-04 09:17:51 +01:00
pinctrl-gemini.c
pinctrl-ingenic.c linux/kconfig.h: replace IF_ENABLED() with PTR_IF() in <linux/kernel.h> 2021-05-09 00:29:45 +09:00
pinctrl-k210.c drivers: pinctrl: Remove duplicate include of io.h 2021-03-30 00:54:37 +02:00
pinctrl-lantiq.c pinctrl: fix several typos 2020-04-28 13:26:49 +02:00
pinctrl-lantiq.h
pinctrl-lpc18xx.c pinctrl: Introduce MODE group in enum pin_config_param 2021-04-22 02:03:01 +02:00
pinctrl-max77620.c
pinctrl-mcp23s08_i2c.c pinctrl: mcp23s08: Split to three parts: core, I²C, SPI 2020-04-16 14:21:23 +02:00
pinctrl-mcp23s08_spi.c pinctrl: mcp23s08: Print error message when regmap init fails 2020-11-05 11:30:31 +01:00
pinctrl-mcp23s08.c pinctrl: mcp23s08: fix race condition in irq handler 2021-06-07 00:23:58 +02:00
pinctrl-mcp23s08.h pinctrl: mcp23s08: Split to three parts: core, I²C, SPI 2020-04-16 14:21:23 +02:00
pinctrl-microchip-sgpio.c pinctrl: microchip-sgpio: Fix wrong register offset for IRQ trigger 2021-03-10 14:41:24 +01:00
pinctrl-ocelot.c pinctrl: ocelot: Remove redundant error printing in ocelot_pinctrl_probe() 2021-05-20 01:33:53 +02:00
pinctrl-oxnas.c pinctrl: Use new GPIO_LINE_DIRECTION 2020-02-21 15:19:42 +01:00
pinctrl-palmas.c
pinctrl-pic32.c pinctrl: Use new GPIO_LINE_DIRECTION 2020-02-21 15:19:42 +01:00
pinctrl-pic32.h
pinctrl-pistachio.c pinctrl: Use new GPIO_LINE_DIRECTION 2020-02-21 15:19:42 +01:00
pinctrl-rk805.c pinctrl: rk805: Constify rk805_gpio_cfgs 2020-05-12 13:35:33 +02:00
pinctrl-rockchip.c This is the bulk of the pin control changes for the v5.13 kernel cycle 2021-04-30 13:04:30 -07:00
pinctrl-single.c pinctrl: Fix kernel-doc 2021-05-28 02:42:10 +02:00
pinctrl-st.c pinctrl: remove empty lines in pinctrl subsystem 2021-01-05 16:09:24 +01:00
pinctrl-stmfx.c pinctrl: stmfx: Use irqchip template 2020-08-04 01:29:10 +02:00
pinctrl-sx150x.c pinctrl: remove empty lines in pinctrl subsystem 2021-01-05 16:09:24 +01:00
pinctrl-tb10x.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
pinctrl-utils.c pinctrl: use krealloc_array() 2020-12-15 12:13:37 -08:00
pinctrl-utils.h
pinctrl-xway.c pinctrl: use devm_platform_ioremap_resource() to simplify code 2019-11-05 15:33:40 +01:00
pinctrl-zynq.c pinctrl: Introduce MODE group in enum pin_config_param 2021-04-22 02:03:01 +02:00
pinctrl-zynqmp.c pinctrl: Add Xilinx ZynqMP pinctrl driver support 2021-04-22 11:13:04 +02:00
pinmux.c pinctrl: pinmux: Add pinmux-select debugfs file 2021-03-10 14:41:58 +01:00
pinmux.h