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[PATCH] Added a Receive_Abort to the Marvell serial driver

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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>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Carlos Sanchez 2005-10-30 15:02:53 -08:00 committed by Linus Torvalds
parent 6ea05db06f
commit f7232056bf
1 changed files with 2 additions and 0 deletions
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2
drivers/serial/mpsc.c
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@ -1100,6 +1100,8 @@ mpsc_start_rx(struct mpsc_port_info *pi)
{
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);