From 3f255eb37e97e97dfec7cb8d4c75d543de231812 Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Thu, 20 May 2010 21:04:23 -0500 Subject: [PATCH] sh,sh-sci: Use NO_POLL_CHAR in the SCIF polled console code The sci_poll_get_char() needs to return immediately if there is no input from the chip to process, and must return a value of NO_POLL_CHAR. This allows kgdboc to process multiple polled devices while kgdb is active. Signed-off-by: Jason Wessel Acked-by: Paul Mundt --- drivers/serial/sh-sci.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 8d993c4cceac..f250a610a268 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -151,7 +151,11 @@ static int sci_poll_get_char(struct uart_port *port) handle_error(port); continue; } - } while (!(status & SCxSR_RDxF(port))); + break; + } while (1); + + if (!(status & SCxSR_RDxF(port))) + return NO_POLL_CHAR; c = sci_in(port, SCxRDR); -- 2.20.1