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@xxxxxxxxxx>
---
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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