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spi: davinci: use dma_mapping_error()

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[ Upstream commit c5a2a39483 ]

The correct error checking for dma_map_single() is to use
dma_mapping_error().

Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kevin Hilman
2017-01-11 18:18:40 -08:00
committed by Greg Kroah-Hartman
parent be91b09750
commit 11dd9e2c48
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-davinci.c
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@@ -651,7 +651,7 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
buf = t->rx_buf;
t->rx_dma = dma_map_single(&spi->dev, buf,
t->len, DMA_FROM_DEVICE);
if (!t->rx_dma) {
if (dma_mapping_error(&spi->dev, !t->rx_dma)) {
ret = -EFAULT;
goto err_rx_map;
}
@@ -665,7 +665,7 @@ static int davinci_spi_bufs(struct spi_device *spi, struct spi_transfer *t)
buf = (void *)t->tx_buf;
t->tx_dma = dma_map_single(&spi->dev, buf,
t->len, DMA_TO_DEVICE);
if (!t->tx_dma) {
if (dma_mapping_error(&spi->dev, t->tx_dma)) {
ret = -EFAULT;
goto err_tx_map;
}