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From: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
To: <spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
	<rob-VoJi6FS/r0vR7s880joybQ@public.gmane.org>,
	<rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>
Cc: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
	Linux Kernel Mailing List
	<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>,
	Linux OMAP Mailing List
	<linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: [PATCH 1/2] spi: omap2: disable DMA requests before complete()
Date: Wed, 12 Dec 2012 10:45:59 +0200	[thread overview]
Message-ID: <1355301960-21523-1-git-send-email-balbi@ti.com> (raw)

No actual errors have been found for completing
before disabling DMA request lines, but it just
looks more semantically correct that on our DMA
callback we quiesce the whole thing before stating
transfer is finished.

Signed-off-by: Felipe Balbi <balbi-l0cyMroinI0@public.gmane.org>
---
 drivers/spi/spi-omap2-mcspi.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index b610f52..68446db 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -298,10 +298,10 @@ static void omap2_mcspi_rx_callback(void *data)
 	struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master);
 	struct omap2_mcspi_dma *mcspi_dma = &mcspi->dma_channels[spi->chip_select];
 
-	complete(&mcspi_dma->dma_rx_completion);
-
 	/* We must disable the DMA RX request */
 	omap2_mcspi_set_dma_req(spi, 1, 0);
+
+	complete(&mcspi_dma->dma_rx_completion);
 }
 
 static void omap2_mcspi_tx_callback(void *data)
@@ -310,10 +310,10 @@ static void omap2_mcspi_tx_callback(void *data)
 	struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master);
 	struct omap2_mcspi_dma *mcspi_dma = &mcspi->dma_channels[spi->chip_select];
 
-	complete(&mcspi_dma->dma_tx_completion);
-
 	/* We must disable the DMA TX request */
 	omap2_mcspi_set_dma_req(spi, 0, 0);
+
+	complete(&mcspi_dma->dma_tx_completion);
 }
 
 static void omap2_mcspi_tx_dma(struct spi_device *spi,
-- 
1.8.1.rc1.5.g7e0651a

             reply	other threads:[~2012-12-12  8:45 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-12  8:45 Felipe Balbi [this message]
     [not found] ` <1355301960-21523-1-git-send-email-balbi-l0cyMroinI0@public.gmane.org>
2012-12-12  8:46   ` [PATCH 2/2] spi: devicetree: add support for loopback mode Felipe Balbi
2012-12-15  0:32     ` Grant Likely
2012-12-15 14:55       ` Felipe Balbi
2012-12-16 21:14         ` Grant Likely
2012-12-15  0:35 ` [PATCH 1/2] spi: omap2: disable DMA requests before complete() Grant Likely

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