forked from Minki/linux
a2be393114
when requesting a GPIO for the first time, the POLAR setting is not set to a sane state. this can lead to indeterminate behavior that cannot be resolved without an explicit write to the Blackfin port POLAR register. when requesting a GPIO for the first time via gpio_request(), the POLAR setting for the GPIO in question should be set to sane state. this should occur if the GPIO has not been allocated in any other way. some examples: - when doing something like "request_irq(); gpio_request();" on the same GPIO, the POLAR setting should not be reset. - when doing "gpio_request(); gpio_request();" on the same GPIO, the POLAR setting should be reset only the first time and not the second. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> |
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boot | ||
configs | ||
include/asm | ||
kernel | ||
lib | ||
mach-bf518 | ||
mach-bf527 | ||
mach-bf533 | ||
mach-bf537 | ||
mach-bf538 | ||
mach-bf548 | ||
mach-bf561 | ||
mach-common | ||
mm | ||
oprofile | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |