* [PATCH v2] Powerpc 8xx CPM_UART desynchronisation
@ 2012-09-24 6:17 Christophe Leroy
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From: Christophe Leroy @ 2012-09-24 6:17 UTC (permalink / raw)
To: Alan Cox, Vitaly Bordug, Marcelo Tosatti
Cc: linux-kernel, linux-serial, linuxppc-dev
This patch 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>
--- 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. */
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2012-09-24 6:17 [PATCH v2] Powerpc 8xx CPM_UART desynchronisation Christophe Leroy
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