The patch titled
blackfin serial driver: fix a bug in dma circle rx buffer handling
has been added to the -mm tree. Its filename is
blackfin-serial-driver-fix-a-bug-in-dma-circle-rx-buffer-handling.patch
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------------------------------------------------------
Subject: blackfin serial driver: fix a bug in dma circle rx buffer handling
From: Sonic Zhang <sonic.zhang@xxxxxxxxxx>
Reported-by: Qian Zhang <zhangq@xxxxxxxxxxxxx>
Signed-off-by: Sonic Zhang <sonic.zhang@xxxxxxxxxx>
Signed-off-by: Bryan Wu <cooloney@xxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/serial/bfin_5xx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -puN drivers/serial/bfin_5xx.c~blackfin-serial-driver-fix-a-bug-in-dma-circle-rx-buffer-handling drivers/serial/bfin_5xx.c
--- a/drivers/serial/bfin_5xx.c~blackfin-serial-driver-fix-a-bug-in-dma-circle-rx-buffer-handling
+++ a/drivers/serial/bfin_5xx.c
@@ -402,9 +402,11 @@ static void bfin_serial_dma_rx_chars(str
else
flg = TTY_NORMAL;
- for (i = uart->rx_dma_buf.tail; i != uart->rx_dma_buf.head; i++) {
+ for (i = uart->rx_dma_buf.tail; ; i++) {
if (i >= UART_XMIT_SIZE)
i = 0;
+ if (i == uart->rx_dma_buf.head)
+ break;
if (!uart_handle_sysrq_char(&uart->port, uart->rx_dma_buf.buf[i]))
uart_insert_char(&uart->port, status, OE,
uart->rx_dma_buf.buf[i], flg);
_
Patches currently in -mm which might be from sonic.zhang@xxxxxxxxxx are
linux-next.patch
blackfin-serial-driver-fix-a-bug-in-dma-circle-rx-buffer-handling.patch
blackfin-serial-driver-change-hardware-flowcontrol-from-poll-to-interrupt-driven.patch
blackfin-serial-driver-fix-bug-serial-port-transfer-big-file-from-host-to-target-would-have-more-lines.patch
blackfin-serial-driver-fix-compile-error-in-pio-mode.patch
blackfin-serial-driver-fix-bug-enable-hardware-based-cts-and-rts-for-bf548.patch
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