Powerpc 8xx CPM_UART desynchronisation

Submitted by Christophe Leroy on Aug. 14, 2012, 2:26 p.m.

Details

Message ID 201208141426.q7EEQQmD003947@localhost.localdomain
State Accepted, archived
Headers show

Commit Message

Christophe Leroy Aug. 14, 2012, 2:26 p.m.
Hello,

I'm not sure who to address this Patch to.

It fixes a desynchronisation problem with CPM UART driver on Powerpc MPC8xx.
The problem happens if data is received before the device is open by the user application.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

Patch hide | download patch | download mbox

--- linux-3.5-vanilla/drivers/tty/serial/cpm_uart/cpm_uart_core.c	2012-07-21 22:58:29.000000000 +0200
+++ linux-3.5/drivers/tty/serial/cpm_uart/cpm_uart_core.c	2012-08-09 17:38:37.000000000 +0200
@@ -417,6 +417,7 @@ 
 			clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR);
 			clrbits16(&pinfo->sccp->scc_sccm, UART_SCCM_RX);
 		}
+		cpm_uart_initbd(pinfo);
 		cpm_line_cr_cmd(pinfo, CPM_CR_INIT_TRX);
 	}
 	/* Install interrupt handler. */