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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2017-11-17 15:38:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-17 16:10:03 -0800 |
| commit | c46d90cd7c3c5d3a5eb6265f2b0f06f44576d5a1 (patch) | |
| tree | 517b1c432d61bdef59b966ce1e5445a824f6e7d8 /drivers/rapidio | |
| parent | b1402dcb5643b7a27d46a05edd7491d49ba0e248 (diff) | |
| download | linux-c46d90cd7c3c5d3a5eb6265f2b0f06f44576d5a1.tar.gz linux-c46d90cd7c3c5d3a5eb6265f2b0f06f44576d5a1.tar.bz2 linux-c46d90cd7c3c5d3a5eb6265f2b0f06f44576d5a1.zip | |
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 <christophe.jaillet@wanadoo.fr>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Christian K_nig <christian.koenig@amd.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio')
| -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; |