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From: Jason Wessel <jason.wessel@windriver.com>
To: kgdb-bugreport@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org,
	Jason Wessel <jason.wessel@windriver.com>,
	alan@lxorguk.ukuu.org.uk
Subject: [PATCH 4/7] kgdboc, 8250: Add the rx polling hook to 8250 driver
Date: Tue, 21 Oct 2008 14:14:50 -0500	[thread overview]
Message-ID: <1224616493-23237-5-git-send-email-jason.wessel@windriver.com> (raw)
In-Reply-To: <1224616493-23237-4-git-send-email-jason.wessel@windriver.com>

The RX polling hook allows the debugger to hook character input so as
to allow entry to the kernel debugger with a control-c as an example.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
---
 drivers/serial/8250.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 303272a..4f7343e 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1361,6 +1361,10 @@ receive_chars(struct uart_8250_port *up, unsigned int *status)
 			else if (lsr & UART_LSR_FE)
 				flag = TTY_FRAME;
 		}
+#ifdef CONFIG_CONSOLE_POLL
+		if (up->port.poll_rx_cb && up->port.poll_rx_cb(ch))
+			goto ignore_char;
+#endif
 		if (uart_handle_sysrq_char(&up->port, ch))
 			goto ignore_char;
 
-- 
1.6.0.2


  reply	other threads:[~2008-10-21 19:16 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-21 19:14 kgdb 2.6.28 merge plans Jason Wessel
2008-10-21 19:14 ` [PATCH 1/7] kgdb: Add the ability to schedule a breakpoint via a tasklet Jason Wessel
2008-10-21 19:14   ` [PATCH 2/7] tty: Fix sparse static warning for tty_driver_lookup_tty Jason Wessel
2008-10-21 19:14     ` [PATCH 3/7] kgdboc, tty: Add the rx polling call back capability Jason Wessel
2008-10-21 19:14       ` Jason Wessel [this message]
2008-10-21 19:14         ` [PATCH 5/7] kgdboc, tty: use tty open to start low level drivers Jason Wessel
2008-10-21 19:14           ` [PATCH 6/7] kgdb: kgdboc console poll hooks for serial_txx9 uart Jason Wessel
2008-10-21 19:14             ` [PATCH 7/7] kgdb: Make mem access function weak in kgdb.c andkgdb.h Jason Wessel
2008-10-21 21:49           ` [PATCH 5/7] kgdboc, tty: use tty open to start low level drivers Jason Wessel
2008-10-21 22:47           ` Alan Cox
2008-10-22  1:54             ` Jason Wessel
2008-10-21 22:49 ` kgdb 2.6.28 merge plans Alan Cox
2008-10-22  2:09   ` Jason Wessel
2008-10-22  8:34     ` Alan Cox
2008-10-22 10:07       ` Jason Wessel
2008-10-22 12:25         ` Alan Cox

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