Messages in this thread Patch in this message | | | From | Christian Eggers <> | Subject | [resubmit2] [PATCH] spi: spi-davinci: Fix direction in dma_map_single() | Date | Mon, 29 Jul 2013 20:54:09 +0200 |
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The following patch I already sent on 2013-04-18 and 2013-06-06. Unfortunately it hasn't been committed yet.
Commit 048177ce3b3962852fd34a7e04938959271c7e70 (spi: spi-davinci: convert to DMA engine API) introduced a regression: dma_map_single() is called with direction DMA_FROM_DEVICE for rx and for tx.
Signed-off-by: Christian Eggers <ceggers@gmx.de> Cc: stable@vger.kernel.org # v3.7.x+ Acked-by: Matt Porter <mporter@ti.com> --- --- drivers/spi/spi-davinci.c.orig 2013-04-18 20:54:02.728719412 +0200 +++ drivers/spi/spi-davinci.c 2013-04-18 20:54:51.900623956 +0200 @@ -608,7 +608,7 @@ static int davinci_spi_bufs(struct spi_d else buf = (void *)t->tx_buf; t->tx_dma = dma_map_single(&spi->dev, buf, - t->len, DMA_FROM_DEVICE); + t->len, DMA_TO_DEVICE); if (!t->tx_dma) { ret = -EFAULT; goto err_tx_map;
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