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Bartosz Golaszewski 74f47f07e5 gpio: pca953x: add a comment explaining the need for a lockdep subclass 
This is a follow-up to commit 559b46990e ("gpio: pca953x: fix an
incorrect lockdep warning"). The reason for calling
lockdep_set_subclass() in pca953x_probe() is not explained in
the code.

Add a comment describing the problem, partial solution and required
future extensions.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
 		2016-10-11 23:17:08 +02:00
..
Kconfig This is the bulk of GPIO changes for the v4.9 series: 2016-10-05 11:49:09 -07:00
Makefile Merge branch 'ib-move-htc-egpio' into devel 2016-09-28 09:30:21 -07:00
devres.c gpio: Propagate all errors in devm_get_gpiod_from_child() 2016-02-25 10:04:25 +01:00
gpio-74x164.c gpio: 74x164: Use spi_write() helper instead of open coding 2016-06-23 11:07:12 +02:00
gpio-74xx-mmio.c gpio: 74xx-mmio: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:19:42 +05:30
gpio-104-dio-48e.c gpio: 104-dio-48e: Fix control port offset computation off-by-one error 2016-06-08 10:08:12 +02:00
gpio-104-idi-48.c gpio: 104-idi-48: Fix missing spin_lock_init for ack_lock 2016-06-13 14:48:10 +02:00
gpio-104-idio-16.c gpio: 104-idio-16: Utilize the ISA bus driver 2016-05-02 09:32:04 -07:00
gpio-adnp.c gpio: adnp: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:19:46 +05:30
gpio-adp5520.c gpio: adp5520: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:34:06 +05:30
gpio-adp5588.c gpio: adp5588: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:34:24 +05:30
gpio-altera.c gpio: altera: fix implicit assumption module.h is present 2016-09-15 14:00:47 +02:00
gpio-amd8111.c gpio: amd8111: Use devm_request_region 2016-02-16 00:19:52 +01:00
gpio-amdpt.c gpio: amdpt: Add a new ACPI HID 2016-03-30 10:38:51 +02:00
gpio-arizona.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-aspeed.c gpio: aspeed: remove redundant return value check 2016-09-23 15:11:09 +02:00
gpio-ath79.c gpio: ath79: fix implicit assumption module.h is present 2016-09-15 14:01:36 +02:00
gpio-axp209.c gpio: axp209: Implement get_direction 2016-09-23 15:13:04 +02:00
gpio-bcm-kona.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-brcmstb.c gpio: brcmstb: Return proper error if bank width is invalid 2016-04-15 10:09:48 +02:00
gpio-bt8xx.c
…
gpio-clps711x.c gpio: clps711x: Remove board support 2016-06-08 10:49:58 +02:00
gpio-crystalcove.c gpio: crystalcove: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:27 +05:30
gpio-cs5535.c gpio: cs5535: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:28 +05:30
gpio-da9052.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-da9055.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-davinci.c Merge branch 'devel' into for-next 2016-02-22 13:47:49 +01:00
gpio-dln2.c gpio: dln2: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:30 +05:30
gpio-dwapb.c gpio: dwapb: add missing fwnode_handle_put() in dwapb_gpio_get_pdata() 2016-07-22 15:30:42 +02:00
gpio-em.c
…
gpio-ep93xx.c gpio: ep93xx: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:30 +05:30
gpio-etraxfs.c
…
gpio-f7188x.c gpio: f7188x: use gpiochip_get_data instead of container_of 2016-09-18 13:35:06 +02:00
gpio-ge.c gpio: ge: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:31 +05:30
gpio-gpio-mm.c gpio: Add GPIO support for the Diamond Systems GPIO-MM 2016-08-11 13:37:25 +02:00
gpio-grgpio.c
…
gpio-htc-egpio.c mfd/gpio: Move HTC GPIO driver to GPIO subsystem 2016-09-28 09:28:34 -07:00
gpio-ich.c gpio: ich: Use devm_request_region 2016-02-16 00:19:53 +01:00
gpio-intel-mid.c gpio: intel-mid: Sort header block alphabetically 2016-07-22 15:30:40 +02:00
gpio-iop.c gpio: iop: Use generic GPIO MMIO functions for driver 2016-09-12 15:28:18 +02:00
gpio-it87.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-janz-ttl.c gpio: janz-ttl: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:33 +05:30
gpio-kempld.c gpio: kempld: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:34 +05:30
gpio-ks8695.c gpio: ks8695: remove irq_to_gpio function 2016-02-19 00:20:30 +01:00
gpio-loongson.c gpio: convert remaining users to gpiochip_add_data() 2016-01-05 11:21:20 +01:00
gpio-loongson1.c gpio: loongson1: remove redundant return value check 2016-09-23 15:10:00 +02:00
gpio-lp873x.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-lp3943.c Revert "gpio: lp3943: Drop pin_used and lp3943_gpio_request/lp3943_gpio_free" 2016-03-09 22:00:27 +07:00
gpio-lpc18xx.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-lpc32xx.c gpio: lpc32xx: remove unused platform data file 2016-09-12 14:23:37 +02:00
gpio-lynxpoint.c gpio: lynxpoint: avoid potential warning on error path 2016-06-23 11:07:14 +02:00
gpio-max730x.c gpio: max730x: set gpiochip data pointer before using it 2016-08-10 15:40:44 +02:00
gpio-max732x.c
…
gpio-max7300.c
…
gpio-max7301.c
…
gpio-max77620.c gpio: max77620: get gpio value based on direction 2016-07-04 11:39:38 +02:00
gpio-mb86s7x.c gpio: mb86s7x: make explicitly non-modular 2016-03-31 15:00:28 +02:00
gpio-mc9s08dz60.c gpio: mc9s08dz60: make explicitly non-modular 2016-03-31 15:02:09 +02:00
gpio-mc33880.c
…
gpio-mcp23s08.c gpio: mcp23s08: make driver depend on OF_GPIO 2016-09-08 00:42:57 +02:00
gpio-menz127.c gpio: remove redundant owner assignments of drivers 2016-06-07 09:35:16 +02:00
gpio-merrifield.c gpio: merrifield: Protect irq_ack() and gpio_set() by lock 2016-07-22 15:30:42 +02:00
gpio-ml-ioh.c
…
gpio-mm-lantiq.c gpio: mm-lantiq: Do not use gpiochip_get_data() in ltq_mm_save_regs() 2016-01-13 10:21:06 +01:00
gpio-mmio.c gpio: mmio: add brcm,bcm6345 support 2016-08-11 16:17:05 +02:00
gpio-mockup.c gpio/mockup: add virtual gpio device 2016-09-26 11:47:14 -07:00
gpio-moxart.c gpio: moxart: make explicitly non-modular 2016-03-31 15:03:13 +02:00
gpio-mpc8xxx.c gpio: mpc8xxx: Slightly update the code for better readability 2016-03-09 10:44:13 +07:00
gpio-mpc5200.c gpio: Include linux/gpio.h instead of asm/gpio.h 2016-02-16 00:20:03 +01:00
gpio-msic.c gpio: msic: drop unused MODULE_ tags from non-modular code 2016-08-23 11:22:09 +02:00
gpio-mvebu.c gpio: mvebu: make explicitly non-modular 2016-03-31 15:05:44 +02:00
gpio-mxc.c This is the bulk of GPIO changes for the v4.9 series: 2016-10-05 11:49:09 -07:00
gpio-mxs.c
…
gpio-octeon.c gpio: octeon: Constify octeon_gpio_match table 2016-03-30 10:38:51 +02:00
gpio-omap.c gpio: omap: fix irq triggering in smart-idle wakeup mode 2016-04-26 15:56:47 +02:00
gpio-palmas.c gpio: palmas: fix implicit assumption module.h is present 2016-09-15 13:57:43 +02:00
gpio-pca953x.c gpio: pca953x: add a comment explaining the need for a lockdep subclass 2016-10-11 23:17:08 +02:00
gpio-pcf857x.c gpio: pcf857x: restore the initial line state of all pcf lines 2016-06-07 09:35:16 +02:00
gpio-pch.c gpio: pch: Optimize pch_gpio_get() 2016-01-05 15:46:34 +01:00
gpio-pisosr.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-pl061.c gpio: pl061: implement .get_direction() 2016-04-28 14:36:37 +02:00
gpio-pxa.c gpio: pxa: fix legacy non pinctrl aware builds 2016-04-08 10:10:08 +02:00
gpio-rc5t583.c gpio: rc5t583: make explicitly non-modular 2016-04-05 17:02:35 +02:00
gpio-rcar.c gpio: rcar: Add r8a7796 (R-Car M3-W) support 2016-09-08 01:15:46 +02:00
gpio-rdc321x.c gpio: remove redundant owner assignments of drivers 2016-06-07 09:35:16 +02:00
gpio-sa1100.c gpio: sa1100: fix irq probing for ucb1x00 2016-09-08 00:42:57 +02:00
gpio-sch.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-sch311x.c gpio: remove redundant owner assignments of drivers 2016-06-07 09:35:16 +02:00
gpio-sodaville.c gpio: sodaville: make it explicitly non-modular 2016-05-11 13:46:49 +02:00
gpio-spear-spics.c gpio: spear-spics: drop unused MODULE_ tags from non-modular code 2016-08-23 11:23:41 +02:00
gpio-sta2x11.c gpio: sta2x11: make explicitly non-modular 2016-03-31 15:07:40 +02:00
gpio-stmpe.c gpio: stmpe: use BIT() macro 2016-09-30 09:03:02 -07:00
gpio-stp-xway.c gpio: stp-xway: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:43 +05:30
gpio-sx150x.c gpio: sx150x: fix implicit assumption module.h is present 2016-09-15 13:59:02 +02:00
gpio-syscon.c gpio: syscon: Change the compatibility string 2016-06-08 10:48:17 +02:00
gpio-tb10x.c gpio: tb10x: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:44 +05:30
gpio-tc3589x.c gpio: tc3589x: fix up complaints on unsigned 2016-09-19 10:14:29 +02:00
gpio-tegra.c gpio: tegra: Make lockdep class file-scoped 2016-06-22 17:58:07 +02:00
gpio-timberdale.c gpio: timberdale: make it explicitly non-modular 2016-05-11 13:49:11 +02:00
gpio-tpic2810.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-tps6586x.c gpio: remove redundant owner assignments of drivers 2016-06-07 09:35:16 +02:00
gpio-tps65086.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-tps65218.c gpio: tps65218: use devm_gpiochip_add_data() for gpio registration 2016-09-18 13:18:13 +02:00
gpio-tps65910.c gpio: remove redundant owner assignments of drivers 2016-06-07 09:35:16 +02:00
gpio-tps65912.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-ts4800.c gpio: ts4800: fix implicit assumption module.h is present 2016-09-15 13:59:52 +02:00
gpio-ts4900.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-ts5500.c gpio: ts5500: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:49 +05:30
gpio-twl4030.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-twl6040.c gpio: twl6040: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:50 +05:30
gpio-tz1090-pdc.c
…
gpio-tz1090.c
…
gpio-ucb1400.c gpio: ucb1400: Use devm_gpiochip_add_data() for gpio registration 2016-02-23 20:35:50 +05:30
gpio-vf610.c gpio: vf610: drop unused MODULE_ tags from non-modular code 2016-08-23 11:24:40 +02:00
gpio-viperboard.c gpio: remove redundant owner assignments of drivers 2016-06-07 09:35:16 +02:00
gpio-vr41xx.c gpio: convert remaining users to gpiochip_add_data() 2016-01-05 11:21:20 +01:00
gpio-vx855.c gpio: vx855: use the new open drain callback 2016-04-14 14:03:28 +02:00
gpio-wcove.c gpio: wcove: fix implicit assumption module.h is present 2016-09-15 14:03:33 +02:00
gpio-wm831x.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-wm8350.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-wm8994.c gpio: constify gpio_chip structures 2016-09-13 10:35:56 +02:00
gpio-ws16c48.c gpio: ws16c48: Utilize the ISA bus driver 2016-05-02 09:32:04 -07:00
gpio-xgene-sb.c gpio: xgene-sb: Use irq_domain_free_irqs_common() 2016-03-31 10:22:53 +02:00
gpio-xgene.c This is the bulk of GPIO changes for kernel cycle v4.7: 2016-05-17 17:39:42 -07:00
gpio-xilinx.c gpio: xilinx: Add support to set multiple GPIO at once 2016-06-08 10:33:45 +02:00
gpio-xlp.c gpio: Add ACPI support for XLP GPIO controller 2016-06-08 10:54:13 +02:00
gpio-xtensa.c gpio: convert remaining users to gpiochip_add_data() 2016-01-05 11:21:20 +01:00
gpio-zevio.c gpio: zevio: make it explicitly non-modular 2016-05-11 13:50:01 +02:00
gpio-zx.c gpio: zx: make explicitly non-modular 2016-03-31 15:10:25 +02:00
gpio-zynq.c gpio: Added zynq specific check for special pins on bank zero 2016-09-23 15:26:20 +02:00
gpiolib-acpi.c gpio: acpi: separation of concerns 2016-10-03 23:38:10 +02:00
gpiolib-legacy.c Revert "gpiolib: Split GPIO flags parsing and GPIO configuration" 2016-07-04 16:51:29 +02:00
gpiolib-of.c This is the bulk of GPIO changes for the v4.9 series: 2016-10-05 11:49:09 -07:00
gpiolib-sysfs.c gpio: fix documentation for gpiod_unexport 2016-09-12 14:53:33 +02:00
gpiolib.c gpio: acpi: separation of concerns 2016-10-03 23:38:10 +02:00
gpiolib.h gpio: add missing static inline 2016-10-03 23:38:11 +02:00