Hi Chunyan Zhang,
On Fri, Jan 16, 2015 at 06:00:11PM +0800, Chunyan Zhang wrote:
> + if (uart_handle_sysrq_char(port, ch))
> + continue;
You don't define SUPPORT_SYSRQ, so uart_handle_sysrq_char has no effect. See
include/linux/serial_core.h.
baruch
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