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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-10-16 07:03:13 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 20:21:40 +0200
commit2f8d11971b9f54362437ce70f4d1911f0996d542 (patch)
tree48fb0df29994e976325761bd9e07ce107a96b6d5 /scripts/Makefile.modpost
parentgpio_free might sleep, generic part (diff)
downloadlinux-2f8d11971b9f54362437ce70f4d1911f0996d542.tar.xz
linux-2f8d11971b9f54362437ce70f4d1911f0996d542.zip
gpio: i2c expanders use subsys_init
Make the I2C external GPIO expander drivers register themselves at subsys_initcall() time when they're statically linked. SOC-integrated GPIOs are available starting very early -- early in arch_initcall() at latest, but often even before initcalls start to run -- so this improves consistency, so more subsystems can rely on GPIOs in their own subsys_initcall() code. (This isn't a theoretical problem. This is one of several patches needed to resolve oopsing observed when statically linking kernels on a DaVinci EVM. Its pcf857x GPIOs needed to be available well before some other drivers initialized.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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