spi/omap2: disable DMA requests before complete()
authorFelipe Balbi <balbi@ti.com>
Wed, 12 Dec 2012 08:45:59 +0000 (10:45 +0200)
committerGrant Likely <grant.likely@secretlab.ca>
Tue, 5 Feb 2013 12:26:57 +0000 (12:26 +0000)
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@ti.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
drivers/spi/spi-omap2-mcspi.c

index b610f522ca4470e341bda1f54f9481a52b37ecb7..68446dbd554586b36ca1f449f076dbeca976155d 100644 (file)
@@ -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,