The patch titled
atmel_serial: fix flow control bug
has been added to the -mm tree. Its filename is
atmel_serial-fix-flow-control-bug.patch
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------------------------------------------------------
Subject: atmel_serial: fix flow control bug
From: Itai Levi <itai.levi.devel@xxxxxxxxx>
Fix the following problem, related to hardware flow control (CTS/RTS):
Transmitting while CTS line is asserted in DMA mode, due to not checking
for tx-stopped condition.
We found these problems while testing the UARTs with hardware
flow-control.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@xxxxxxxxx>
Cc: "Andrew Victor" <avictor.za@xxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/serial/atmel_serial.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/serial/atmel_serial.c~atmel_serial-fix-flow-control-bug drivers/serial/atmel_serial.c
--- a/drivers/serial/atmel_serial.c~atmel_serial-fix-flow-control-bug
+++ a/drivers/serial/atmel_serial.c
@@ -579,7 +579,7 @@ static void atmel_tx_dma(struct uart_por
/* disable PDC transmit */
UART_PUT_PTCR(port, ATMEL_PDC_TXTDIS);
- if (!uart_circ_empty(xmit)) {
+ if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {
dma_sync_single_for_device(port->dev,
pdc->dma_addr,
pdc->dma_size,
_
Patches currently in -mm which might be from itai.levi.devel@xxxxxxxxx are
atmel_serial-fix-flow-control-bug.patch
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