linux-kernel - [PATCH 3.4 022/177] spi: dw-mid: terminate ongoing transfers at exit

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Message-Id: <1422418236-12852-44-git-send-email-lizf@kernel.org>
Date:	Wed, 28 Jan 2015 12:06:51 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Mark Brown <broonie@...nel.org>, Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 022/177] spi: dw-mid: terminate ongoing transfers at exit

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

3.4.106-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit 8e45ef682cb31fda62ed4eeede5d9745a0a1b1e2 upstream.

Do full clean up at exit, means terminate all ongoing DMA transfers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
[lizf: Backported to 3.4: adjust context]
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 drivers/spi/spi-dw-mid.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c
index 58fa14d..efc494a 100644
--- a/drivers/spi/spi-dw-mid.c
+++ b/drivers/spi/spi-dw-mid.c
@@ -89,7 +89,10 @@ err_exit:
 
 static void mid_spi_dma_exit(struct dw_spi *dws)
 {
+	dmaengine_terminate_all(dws->txchan);
 	dma_release_channel(dws->txchan);
+
+	dmaengine_terminate_all(dws->rxchan);
 	dma_release_channel(dws->rxchan);
 }
 
-- 
1.9.1

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