From f7232056bff5fe2d3bfeab35252a66ebaeb5bbde Mon Sep 17 00:00:00 2001 From: Carlos Sanchez Date: Sun, 30 Oct 2005 15:02:53 -0800 Subject: [PATCH] [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 Signed-off-by: Carlos Sanchez Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/serial/mpsc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/serial/mpsc.c b/drivers/serial/mpsc.c index efe79b1fd431..aec83f577ce6 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); -- GitLab