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authorCarlos Sanchez <csanchez@windy.az.mvista.com>2005-10-30 15:02:53 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-30 17:37:25 -0800
commitf7232056bff5fe2d3bfeab35252a66ebaeb5bbde (patch)
treea3dd4fd813ca169e9364a1d751c6236c3d2715c4
parent6ea05db06f32adac65b4c4e95ef998839149de12 (diff)
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[PATCH] Added a Receive_Abort to the Marvell serial driver
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>
-rw-r--r--drivers/serial/mpsc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c
index efe79b1fd43..aec83f577ce 100644
--- a/drivers/serial/mpsc.c
+++ b/drivers/serial/mpsc.c
@@ -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);