Arnd Bergmann eb831743f2
char: nwbutton: open-code interruptible_sleep_on ...
The nwbutton driver uses interruptible_sleep_on to wait for buttons
getting pressed after we enter the read() function, which is inherently
racy and cannot be fixed by using wait_event without changing the
driver's user space interface.
Instead, this patch just uses an open-coded variant of the same
interruptible_sleep_on() call, so the driver behavior doesn't change
but we remove the sleep_on family from the kernel.
Signed-off-by: Arnd Bergmann <arnd@arndb.de >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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eb831743f2