From: Bryan Wu <cooloney@kernel.org>
To: alan@lxorguk.ukuu.org.uk
Cc: linux-kernel@vger.kernel.org,
Sonic Zhang <sonic.zhang@analog.com>,
Bryan Wu <cooloney@kernel.org>
Subject: [PATCH 03/18] Blackfin Serial Driver: fix a in dma circle rx buffer handling
Date: Fri, 6 Mar 2009 14:42:45 +0800 [thread overview]
Message-ID: <1236321780-28718-4-git-send-email-cooloney@kernel.org> (raw)
In-Reply-To: <1236321780-28718-1-git-send-email-cooloney@kernel.org>
From: Sonic Zhang <sonic.zhang@analog.com>
Reported-by: Qian Zhang <zhangq@sansitech.com>
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
---
drivers/serial/bfin_5xx.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 350bfc4..1e027e3 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -402,9 +402,11 @@ static void bfin_serial_dma_rx_chars(struct bfin_serial_port *uart)
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);
--
1.5.6.3
next prev parent reply other threads:[~2009-03-06 6:42 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-06 6:42 [PATCH 00/18] Blackfin Serial Driver bug fixing and update Bryan Wu
2009-03-06 6:42 ` [PATCH 01/18] Blackfin Serial Driver: Add a debug function to serial driver Bryan Wu
2009-03-06 22:37 ` Andrew Morton
2009-03-06 6:42 ` [PATCH 02/18] Blackfin Serial Driver: use barrier instead of cpu_relax for Blackfin SMP like patch Bryan Wu
2009-03-06 22:37 ` Andrew Morton
2009-03-10 10:07 ` gyang
2009-03-10 10:25 ` Mike Frysinger
2009-03-10 16:48 ` Andrew Morton
2009-03-11 9:50 ` graff yang
2009-03-11 16:48 ` Andrew Morton
2009-03-06 6:42 ` Bryan Wu [this message]
2009-03-06 22:38 ` [PATCH 03/18] Blackfin Serial Driver: fix a in dma circle rx buffer handling Andrew Morton
2009-03-06 6:42 ` [PATCH 04/18] Blackfin Serial Driver: Change hardware flowcontrol from poll to interrupt driven Bryan Wu
2009-03-06 22:38 ` Andrew Morton
2009-03-06 22:49 ` Mike Frysinger
2009-03-06 23:00 ` Andrew Morton
2009-03-06 6:42 ` [PATCH 05/18] Blackfin Serial Driver: fix bug - serial port transfer big file from host to target would have more lines Bryan Wu
2009-03-06 22:38 ` Andrew Morton
2009-03-06 6:42 ` [PATCH 06/18] Blackfin Serial Driver: explain why we cannot cpu_relax() in early serial code Bryan Wu
2009-03-06 22:38 ` Andrew Morton
2009-03-06 6:42 ` [PATCH 07/18] Blackfin Serial Driver: BF538/9 Linux kernel Support Bryan Wu
2009-03-06 6:42 ` [PATCH 08/18] Blackfin Serial Driver: use "unsigned long" for flags with irq functions rather than "int" Bryan Wu
2009-03-06 6:42 ` [PATCH 09/18] Blackfin Serial Driver: irq funcs take an unsigned long for flags Bryan Wu
2009-03-06 6:42 ` [PATCH 10/18] Blackfin Serial Driver: fix compile error in PIO mode Bryan Wu
2009-03-06 6:42 ` [PATCH 11/18] Blackfin Serial Driver: update KGDB UART config name Bryan Wu
2009-03-06 6:42 ` [PATCH 12/18] Blackfin Serial Driver: fix building when debug is enabled but serial console is disabled Bryan Wu
2009-03-06 6:42 ` [PATCH 13/18] Blackfin Serial Driver: depend on KGDB_SERIAL_CONSOLE being set to N Bryan Wu
2009-03-06 6:42 ` [PATCH 14/18] Blackfin Serial Driver: use the DLAB macro to hide variant differences Bryan Wu
2009-03-06 22:38 ` Andrew Morton
2009-03-06 22:41 ` Mike Frysinger
2009-03-06 6:42 ` [PATCH 15/18] Blackfin Serial Driver: merge the upstream adeos/xenomai Bryan Wu
2009-03-06 22:38 ` Andrew Morton
2009-03-06 22:43 ` Mike Frysinger
2009-03-06 6:42 ` [PATCH 16/18] Blackfin Serial Driver: fix bug - up arrow key works abnormal for bf561 ezkit board Bryan Wu
2009-03-06 6:42 ` [PATCH 17/18] Blackfin Serial Driver: Fix bug - Enable hardware based CTS and RTS for bf548 Bryan Wu
2009-03-06 22:38 ` Andrew Morton
2009-03-06 6:43 ` [PATCH 18/18] Blackfin Serial Driver: update path to gpio header Bryan Wu
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