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Doc: gpio: Fix typos in Documentation/gpio

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This patch fix some spelling typos found in Documentation/gpio.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Masanari Iida 2015-11-16 20:00:35 +09:00 committed by Jonathan Corbet
parent 32d79b023a
commit 547d4c1078
3 changed files with 7 additions and 7 deletions
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2
Documentation/gpio/consumer.txt
View File

@ -260,7 +260,7 @@ will be driven low.
To summarize: To summarize:
Function (example) active-low proporty physical line Function (example) active-low property physical line
gpiod_set_raw_value(desc, 0); don't care low gpiod_set_raw_value(desc, 0); don't care low
gpiod_set_raw_value(desc, 1); don't care high gpiod_set_raw_value(desc, 1); don't care high
gpiod_set_value(desc, 0); default (active-high) low gpiod_set_value(desc, 0); default (active-high) low

6
Documentation/gpio/driver.txt
View File

@ -113,8 +113,8 @@ GPIO irqchips usually fall in one of two categories:
it will be threaded IRQ handler on -RT and hard IRQ handler on non-RT it will be threaded IRQ handler on -RT and hard IRQ handler on non-RT
(for example, see [3]). (for example, see [3]).
Know W/A: The generic_handle_irq() is expected to be called with IRQ disabled, Know W/A: The generic_handle_irq() is expected to be called with IRQ disabled,
so IRQ core will complain if it will be called from IRQ handler wich is forced so IRQ core will complain if it will be called from IRQ handler which is
thread. The "fake?" raw lock can be used to W/A this problem: forced thread. The "fake?" raw lock can be used to W/A this problem:
raw_spinlock_t wa_lock; raw_spinlock_t wa_lock;
static irqreturn_t omap_gpio_irq_handler(int irq, void *gpiobank) static irqreturn_t omap_gpio_irq_handler(int irq, void *gpiobank)
@ -224,7 +224,7 @@ Real-Time compliance for GPIO IRQ chips
--------------------------------------- ---------------------------------------
Any provider of irqchips needs to be carefully tailored to support Real Time Any provider of irqchips needs to be carefully tailored to support Real Time
preemption. It is desireable that all irqchips in the GPIO subsystem keep this preemption. It is desirable that all irqchips in the GPIO subsystem keep this
in mind and does the proper testing to assure they are real time-enabled. in mind and does the proper testing to assure they are real time-enabled.
So, pay attention on above " RT_FULL:" notes, please. So, pay attention on above " RT_FULL:" notes, please.
The following is a checklist to follow when preparing a driver for real The following is a checklist to follow when preparing a driver for real

6
Documentation/gpio/drivers-on-gpio.txt
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@ -54,7 +54,7 @@ hardware descriptions such as device tree or ACPI:
drivers for the I2C devices on the bus like any other I2C bus driver. drivers for the I2C devices on the bus like any other I2C bus driver.
- spi_gpio: drivers/spi/spi-gpio.c is used to drive an SPI bus (variable number - spi_gpio: drivers/spi/spi-gpio.c is used to drive an SPI bus (variable number
of wires, atleast SCK and optionally MISO, MOSI and chip select lines) using of wires, at least SCK and optionally MISO, MOSI and chip select lines) using
GPIO hammering (bitbang). It will appear as any other SPI bus on the system GPIO hammering (bitbang). It will appear as any other SPI bus on the system
and makes it possible to connect drivers for SPI devices on the bus like and makes it possible to connect drivers for SPI devices on the bus like
any other SPI bus driver. For example any MMC/SD card can then be connected any other SPI bus driver. For example any MMC/SD card can then be connected
@ -75,7 +75,7 @@ hardware descriptions such as device tree or ACPI:
- gpio-wdt: drivers/watchdog/gpio_wdt.c is used to provide a watchdog timer - gpio-wdt: drivers/watchdog/gpio_wdt.c is used to provide a watchdog timer
that will periodically "ping" a hardware connected to a GPIO line by toggling that will periodically "ping" a hardware connected to a GPIO line by toggling
it from 1-to-0-to-1. If that hardware does not recieve its "ping" it from 1-to-0-to-1. If that hardware does not receive its "ping"
periodically, it will reset the system. periodically, it will reset the system.
- gpio-nand: drivers/mtd/nand/gpio.c is used to connect a NAND flash chip to - gpio-nand: drivers/mtd/nand/gpio.c is used to connect a NAND flash chip to
@ -91,5 +91,5 @@ usually connected directly to the flash.
Use those instead of talking directly to the GPIOs using sysfs; they integrate Use those instead of talking directly to the GPIOs using sysfs; they integrate
with kernel frameworks better than your userspace code could. Needless to say, with kernel frameworks better than your userspace code could. Needless to say,
just using the apropriate kernel drivers will simplify and speed up your just using the appropriate kernel drivers will simplify and speed up your
embedded hacking in particular by providing ready-made components. embedded hacking in particular by providing ready-made components.