Commit 27504be5 authored by Tomoya MORINAGA's avatar Tomoya MORINAGA Committed by Grant Likely

spi-topcliff-pch: add tx-memory clear after complete transmitting

Currently, in case of reading date from SPI flash,
command is sent twice.
The cause is that tx-memory clear processing is missing .
This patch adds the tx-momory clear processing.
Signed-off-by: default avatarTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 387719c2
...@@ -837,6 +837,11 @@ static void pch_spi_start_transfer(struct pch_spi_data *data) ...@@ -837,6 +837,11 @@ static void pch_spi_start_transfer(struct pch_spi_data *data)
dma_sync_sg_for_cpu(&data->master->dev, dma->sg_rx_p, dma->nent, dma_sync_sg_for_cpu(&data->master->dev, dma->sg_rx_p, dma->nent,
DMA_FROM_DEVICE); DMA_FROM_DEVICE);
dma_sync_sg_for_cpu(&data->master->dev, dma->sg_tx_p, dma->nent,
DMA_FROM_DEVICE);
memset(data->dma.tx_buf_virt, 0, PAGE_SIZE);
async_tx_ack(dma->desc_rx); async_tx_ack(dma->desc_rx);
async_tx_ack(dma->desc_tx); async_tx_ack(dma->desc_tx);
kfree(dma->sg_tx_p); kfree(dma->sg_tx_p);
......
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