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From: Bryan Wu <bryan.wu@analog.com>
To: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
	Sonic Zhang <sonic.zhang@analog.com>,
	Bryan Wu <bryan.wu@analog.com>
Subject: [PATCH 04/12] [Blackfin] serial driver: Fix bug Free rx dma buffer in shutdown.
Date: Wed, 30 Jan 2008 17:30:04 +0800	[thread overview]
Message-ID: <1201685412-29095-5-git-send-email-bryan.wu@analog.com> (raw)
In-Reply-To: <1201685412-29095-1-git-send-email-bryan.wu@analog.com>

From: Sonic Zhang <sonic.zhang@analog.com>

Kernel crash for the serial driver in DMA mode:
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3679

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
---
 drivers/serial/bfin_5xx.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 3a2aa7e..838f491 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -704,6 +704,7 @@ static void bfin_serial_shutdown(struct uart_port *port)
 	disable_dma(uart->rx_dma_channel);
 	free_dma(uart->rx_dma_channel);
 	del_timer(&(uart->rx_dma_timer));
+	dma_free_coherent(NULL, PAGE_SIZE, uart->rx_dma_buf.buf, 0);
 #else
 #ifdef	CONFIG_KGDB_UART
 	if (uart->port.line != CONFIG_KGDB_UART_PORT)
-- 
1.5.3.4

  parent reply	other threads:[~2008-01-30  9:32 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-30  9:30 [PATCH 00/12] Blackfin serial driver updates Bryan Wu
2008-01-30  9:30 ` [PATCH 01/12] [8250 Serial Driver]: Added support for 8250-class UARTs in HV Sistemas H8606 board Bryan Wu
2008-01-30  9:30 ` [PATCH 02/12] [Blackfin] Serial driver: Fix bug - serial driver in PIO mode cant handle input very quickly Bryan Wu
2008-01-30  9:30 ` [PATCH 03/12] [Blackfin] serial driver: Clean up UART DMA code Bryan Wu
2008-01-30  9:30 ` Bryan Wu [this message]
2008-01-30  9:30 ` [PATCH 05/12] [Blackfin] serial driver: Fix bug serial driver in DMA mode spams history to console on shell restart Bryan Wu
2008-01-30  9:30 ` [PATCH 06/12] [Blackfin] serial driver: fix bug - should not wait for the TFI bit, just clear it when tx stop Bryan Wu
2008-01-30  9:30 ` [PATCH 07/12] [Blackfin] serial driver: add extra IRQ flag for 8250 serial driver Bryan Wu
2008-01-30  9:30 ` [PATCH 08/12] [Blackfin] serial driver: fix bug - cache the bits of the LSR on systems where the LSR is read-to-clear Bryan Wu
2008-01-30  9:30 ` [PATCH 09/12] [Blackfin] serial driver: rework break flood anomaly handling to be more robust/realistic about what we can actually work around Bryan Wu
2008-01-30  9:30 ` [PATCH 10/12] [Blackfin] serial driver: use simpler comment headers and strip out information that is maintained in the scm's log Bryan Wu
2008-01-30  9:30 ` [PATCH 11/12] [Blackfin] serial driver: ADSP-BF52x arch/mach support Bryan Wu
2008-01-30 21:01   ` Mike Frysinger
2008-01-31  6:47     ` [PATCH 11/12 try #2] " Bryan Wu
2008-01-30  9:30 ` [PATCH 12/12] [Blackfin] serial driver: Fix bug Poll RTS/CTS status in DMA mode as well Bryan Wu

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