drivers/rapidio/devices/rio_mport_cdev.c: fix error handling in 'rio_dma_transfer()'
authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Fri, 17 Nov 2017 23:38:03 +0000 (15:38 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 18 Nov 2017 00:10:03 +0000 (16:10 -0800)
commitc46d90cd7c3c5d3a5eb6265f2b0f06f44576d5a1
tree517b1c432d61bdef59b966ce1e5445a824f6e7d8
parentb1402dcb5643b7a27d46a05edd7491d49ba0e248
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>
drivers/rapidio/devices/rio_mport_cdev.c