spi: limit reaches -1, tested 0
With a postfix decrement limit will reach -1 rather than 0, so the warning will not be issued. Also, add a cpu_relax() into the busy-wait loop. Signed-off-by: NRoel Kluin <roel.kluin@gmail.com> Cc: Mariusz Ceier <mceier@gmail.com> Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Showing
想要评论请 注册 或 登录