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When count reaches 0 the postfix decrement still subtracts (to -1), so bfin_reset_controller() returns as if the busy flag was cleared while it was not. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Acked-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>