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mailbox: bcm-ferxrm-mailbox: Fix error check for dma_map_sg
dma_map_sg return 0 on error, fix the error check, and return -EIO
to caller.
Fixes: dbc049eee7
("mailbox: Add driver for Broadcom FlexRM ring manager")
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
parent
f5fe925df8
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@ -622,15 +622,15 @@ static int flexrm_spu_dma_map(struct device *dev, struct brcm_message *msg)
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rc = dma_map_sg(dev, msg->spu.src, sg_nents(msg->spu.src),
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DMA_TO_DEVICE);
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if (rc < 0)
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return rc;
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if (!rc)
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return -EIO;
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rc = dma_map_sg(dev, msg->spu.dst, sg_nents(msg->spu.dst),
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DMA_FROM_DEVICE);
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if (rc < 0) {
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if (!rc) {
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dma_unmap_sg(dev, msg->spu.src, sg_nents(msg->spu.src),
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DMA_TO_DEVICE);
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return rc;
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return -EIO;
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}
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return 0;
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