Added a Receive_Abort to the Marvell serial driver

[Carlos Sanchez]

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@xxxxxxxxxx>
Signed-off-by: Carlos Sanchez <csanchez@xxxxxxxxxx>
--
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);
-
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