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2a3cf6a359
linux/drivers/gpio
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Alexandre Courbot 2a3cf6a359 gpiolib: return -ENOENT if no GPIO mapping exists 
Some devices drivers make use of optional GPIO parameters. For such
drivers, it is important to discriminate between the case where no
GPIO mapping has been defined for the function they are requesting, and
the case where a mapping exists but an error occured while resolving it
or when acquiring the GPIO.

This patch changes the family of gpiod_get() functions such that they
will return -ENOENT if and only if no GPIO mapping is defined for the
requested function. Other error codes are used when an actual error
occured during the GPIO resolution.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-12-12 19:33:59 +01:00
..
devres.c
gpio-74x164.c gpio: 74x164: Driver cleanup 2013-12-12 14:28:12 +01:00
gpio-adnp.c Merge branch 'mark-irqs' into devel 2013-12-04 14:48:17 +01:00
gpio-adp5520.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-adp5588.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-amd8111.c gpio: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-03 13:16:09 +01:00
gpio-arizona.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-bcm-kona.c Linux 3.13-rc3 2013-12-09 14:04:37 +01:00
gpio-bt8xx.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-clps711x.c
gpio-cs5535.c
gpio-da9052.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-da9055.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-davinci.c
gpio-em.c Merge branch 'mark-irqs' into devel 2013-12-04 14:48:17 +01:00
gpio-ep93xx.c
gpio-f7188x.c
gpio-ge.c
gpio-generic.c
gpio-grgpio.c
gpio-ich.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-intel-mid.c Merge branch 'mark-irqs' into devel 2013-12-04 14:48:17 +01:00
gpio-iop.c
gpio-it8761e.c
gpio-janz-ttl.c
gpio-kempld.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-ks8695.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-lpc32xx.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-lynxpoint.c Merge branch 'mark-irqs' into devel 2013-12-04 14:48:17 +01:00
gpio-max730x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-max732x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-max7300.c
gpio-max7301.c
gpio-mc9s08dz60.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-mc33880.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-mcp23s08.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-ml-ioh.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-mm-lantiq.c
gpio-moxart.c gpio: MOXA ART: rename moxart_gpio_base to base 2013-12-04 13:27:59 +01:00
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-msic.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-msm-v1.c
gpio-msm-v2.c
gpio-mvebu.c Linux 3.13-rc3 2013-12-09 14:04:37 +01:00
gpio-mxc.c
gpio-mxs.c
gpio-octeon.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-omap.c gpio/omap: raw read and write endian fix 2013-11-25 09:03:39 +01:00
gpio-palmas.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-pca953x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-pcf857x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-pch.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-pl061.c gpio: pl061: move irqdomain initialization 2013-11-27 14:13:50 +01:00
gpio-pxa.c
gpio-rc5t583.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-rcar.c Linux 3.13-rc3 2013-12-09 14:04:37 +01:00
gpio-rdc321x.c
gpio-sa1100.c
gpio-samsung.c
gpio-sch.c
gpio-sodaville.c gpio: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-03 13:16:09 +01:00
gpio-spear-spics.c
gpio-sta2x11.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-stmpe.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-stp-xway.c
gpio-sx150x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tb10x.c Linux 3.13-rc3 2013-12-09 14:04:37 +01:00
gpio-tc3589x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tegra.c gpio: tegra: add missing error handling to probe 2013-12-11 13:37:48 +01:00
gpio-timberdale.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tnetv107x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tps6586x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tps65910.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tps65912.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-ts5500.c
gpio-twl4030.c Linux 3.13-rc3 2013-12-09 14:04:37 +01:00
gpio-twl6040.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-tz1090-pdc.c
gpio-tz1090.c
gpio-ucb1400.c Linux 3.13-rc3 2013-12-09 14:04:37 +01:00
gpio-viperboard.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-vr41xx.c
gpio-vx855.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-wm831x.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-wm8350.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-wm8994.c gpio/pinctrl: make gpio_chip members typed boolean 2013-12-04 14:42:46 +01:00
gpio-xilinx.c
gpio-xtensa.c gpio: driver for Xtensa GPIO32 2013-12-12 14:33:14 +01:00
gpiolib-acpi.c
gpiolib-of.c
gpiolib.c gpiolib: return -ENOENT if no GPIO mapping exists 2013-12-12 19:33:59 +01:00
Kconfig gpio: driver for Xtensa GPIO32 2013-12-12 14:33:14 +01:00
Makefile gpio: driver for Xtensa GPIO32 2013-12-12 14:33:14 +01:00