Commit 3f255eb3 authored May 20, 2010 by Jason Wessel

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 <jason.wessel@windriver.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>

parent f5316b4a

drivers/serial/sh-sci.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -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);