David Brownell 1673ad52bd gpio: pcf857x: add lock and handle more chips ... Two small updates to the pcf857x driver: (a) the max732[89] chips are also second sources for the pcf8574/a, and (b) add a mutex to prevent trashing the cached state. Adding the lock is effectively a bugfix, although it seems unlikely that anyone would have run into the issue it protects against. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-07-22 09:59:41 -07:00
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gpiolib.c
Kconfig
Makefile
max7301.c
mcp23s08.c
pca953x.c
pcf857x.c