serial: bfin-uart: avoid dead lock in rx irq handler in smp kernel
Disabing dma irq and lock bottom half in smp kernel doesn't ensure exclusive uart access. Call spin_lock_irqsave() instead. Signed-off-by: NSteven Miao <realmz6@gmail.com> Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Showing
想要评论请 注册 或 登录