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authorGeert Uytterhoeven <geert+renesas@glider.be>2014-07-10 15:29:32 +0200
committerMark Brown <broonie@linaro.org>2014-07-11 13:57:10 +0100
commit89e4b66a2e34744615c79349aa936df1b4204faf (patch)
tree75a9b942c590ebe9d0d978f3de2e8c07a6bc2e91 /drivers/spi
parent7171511eaec5bf23fb06078f59784a3a0626b38f (diff)
spi: core: Fix check for dma_map_sg() failures
According to Documentation/DMA-API.txt, dma_map_sg() returns 0 on failure. As spi_map_buf() returns an error code, convert zero into -ENOMEM. Keep the existing check for negative numbers just in case. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index d4f9670b51bc..91bb512e1009 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -619,6 +619,8 @@ static int spi_map_buf(struct spi_master *master, struct device *dev,
}
ret = dma_map_sg(dev, sgt->sgl, sgt->nents, dir);
+ if (!ret)
+ ret = -ENOMEM;
if (ret < 0) {
sg_free_table(sgt);
return ret;