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path: root/drivers/spi/spi-pxa2xx-dma.c
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Diffstat (limited to 'drivers/spi/spi-pxa2xx-dma.c')
-rw-r--r--drivers/spi/spi-pxa2xx-dma.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index 713af48..f6759dc 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -29,18 +29,6 @@ static int pxa2xx_spi_map_dma_buffer(struct driver_data *drv_data,
struct sg_table *sgt;
void *buf, *pbuf;
- /*
- * Some DMA controllers have problems transferring buffers that are
- * not multiple of 4 bytes. So we truncate the transfer so that it
- * is suitable for such controllers, and handle the trailing bytes
- * manually after the DMA completes.
- *
- * REVISIT: It would be better if this information could be
- * retrieved directly from the DMA device in a similar way than
- * ->copy_align etc. is done.
- */
- len = ALIGN(drv_data->len, 4);
-
if (dir == DMA_TO_DEVICE) {
dmadev = drv_data->tx_chan->device->dev;
sgt = &drv_data->tx_sgt;
@@ -144,12 +132,8 @@ static void pxa2xx_spi_dma_transfer_complete(struct driver_data *drv_data,
if (!error) {
pxa2xx_spi_unmap_dma_buffers(drv_data);
- /* Handle the last bytes of unaligned transfer */
drv_data->tx += drv_data->tx_map_len;
- drv_data->write(drv_data);
-
drv_data->rx += drv_data->rx_map_len;
- drv_data->read(drv_data);
msg->actual_length += drv_data->len;
msg->state = pxa2xx_spi_next_transfer(drv_data);