diff options
| author | Christophe JAILLET <[email protected]> | 2017-11-17 15:38:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-11-17 16:10:03 -0800 |
| commit | c46d90cd7c3c5d3a5eb6265f2b0f06f44576d5a1 (patch) | |
| tree | 517b1c432d61bdef59b966ce1e5445a824f6e7d8 | |
| parent | b1402dcb5643b7a27d46a05edd7491d49ba0e248 (diff) | |
drivers/rapidio/devices/rio_mport_cdev.c: fix error handling in 'rio_dma_transfer()'
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.
Link: http://lkml.kernel.org/r/d4235bd2b9274e99f6c86ea71b1fa1c7bd8d0c08.1505687047.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <[email protected]>
Reviewed-by: Logan Gunthorpe <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: Alexandre Bounine <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Jesper Nilsson <[email protected]>
Cc: Christian K_nig <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | drivers/rapidio/devices/rio_mport_cdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index 86805747a422..dc5a33f93689 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; |