gpiolib: document that names can contain printk format specifiers
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -60,7 +60,9 @@ struct module;
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* @names: if set, must be an array of strings to use as alternative
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* names for the GPIOs in this chip. Any entry in the array
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* may be NULL if there is no alias for the GPIO, however the
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* array must be @ngpio entries long.
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* array must be @ngpio entries long. A name can include a single printk
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* format specifier for an unsigned int. It is substituted by the actual
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* number of the gpio.
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*
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* A gpio_chip can help platforms abstract various sources of GPIOs so
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* they can all be accessed through a common programing interface.
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