From: Carlos Sanchez <csanchez@windy.az.mvista.com>
To: akpm@osdl.org, csanchez@mvista.com, mgreer@mvista.com
Cc: linux-kernel@vger.kernel.org
Subject: Added a Receive_Abort to the Marvell serial driver
Date: Wed, 12 Oct 2005 15:10:06 -0700 [thread overview]
Message-ID: <200510122210.j9CMA6li018530@windy.az.mvista.com> (raw)
Added a Receive_Abort to the Marvell serial driver
Fix occasional input overrun errors on Marvell serial driver
- If the Marvell serial driver is repeatedly started and then stopped
it will occasionally report an input overrun error when started.
- Added a Receive_Abort to the Marvell serial driver to abort
previously received receive errors when re-starting the receive
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Carlos Sanchez <csanchez@mvista.com>
--
diff -Naur --exclude=.pc --exclude=patches Pristinelinux-2.6.10/drivers/serial/mpsc.c WorkingF101_USB/drivers/serial/mpsc.c
--- Pristinelinux-2.6.10/drivers/serial/mpsc.c 2005-10-07 09:58:56.000000000 -0700
+++ WorkingF101_USB/drivers/serial/mpsc.c 2005-10-12 07:56:13.279523424 -0700
@@ -1100,6 +1105,8 @@
{
pr_debug("mpsc_start_rx[%d]: Starting...\n", pi->port.line);
+ /* Issue a Receive Abort to clear any receive errors */
+ writel(MPSC_CHR_2_RA, pi->mpsc_base + MPSC_CHR_2);
if (pi->rcv_data) {
mpsc_enter_hunt(pi);
mpsc_sdma_cmd(pi, SDMA_SDCM_ERD);
reply other threads:[~2005-10-12 22:08 UTC|newest]
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