Messages in this thread Patch in this message | | | From | Christophe JAILLET <> | Subject | [PATCH 2/2] rapidio: Fix an error handling in 'rio_dma_transfer()' | Date | Mon, 18 Sep 2017 00:33:06 +0200 |
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In case of error, 'dma_map_sg()' returns 0, not a negative value. There is BUG_ON() in 'dma_map_sg_attrs()' which makes sure of that.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- drivers/rapidio/devices/rio_mport_cdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index 76afe1449cab..3dd37e35cf4e 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -961,7 +961,7 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode, nents = dma_map_sg(chan->device->dev, req->sgt.sgl, req->sgt.nents, dir); - if (nents == -EFAULT) { + if (nents == 0) { rmcd_error("Failed to map SG list"); ret = -EFAULT; goto err_pg; -- 2.11.0
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