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Message-Id: <1261603190-5036-15-git-send-email-jason.wessel@windriver.com> Date: Wed, 23 Dec 2009 15:19:27 -0600 From: Jason Wessel <jason.wessel@...driver.com> To: linux-kernel@...r.kernel.org Cc: kgdb-bugreport@...ts.sourceforge.net, kdb@....sgi.com, mingo@...e.hu, Jason Wessel <jason.wessel@...driver.com>, Paul Mundt <lethal@...ux-sh.org> Subject: [PATCH 14/37] 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. CC: Paul Mundt <lethal@...ux-sh.org> Signed-off-by: Jason Wessel <jason.wessel@...driver.com> --- drivers/serial/sh-sci.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 68c7f6c..ab020eb 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -126,7 +126,11 @@ 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); -- 1.6.4.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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