Messages in this thread Patch in this message | | | From | Jason Wessel <> | Subject | [PATCH 14/37] sh,sh-sci: Use NO_POLL_CHAR in the SCIF polled console code | Date | Wed, 23 Dec 2009 15:19:27 -0600 |
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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@linux-sh.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.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
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