Halil Pasic 14c7579376 s390/virtio_ccw: Fix dma_parm pointer not set up ...

At least since commit 334304ac2b ("dma-mapping: don't return errors
from dma_set_max_seg_size") setting up device.dma_parms is basically
mandated by the DMA API. As of now Channel (CCW) I/O in general does not
utilize the DMA API, except for virtio. For virtio-ccw however the
common virtio DMA infrastructure is such that most of the DMA stuff
hinges on the virtio parent device, which is a CCW device.

So lets set up the dma_parms pointer for the CCW parent device and hope
for the best!

Fixes: 334304ac2b ("dma-mapping: don't return errors from dma_set_max_seg_size")
Reported-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tested-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Link: https://lore.kernel.org/r/20241007201030.204028-1-pasic@linux.ibm.com
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

2024-10-10 15:32:43 +02:00

..

Makefile

s390: drivers: Remove redundant license text

2017-11-24 14:28:47 +01:00

virtio_ccw.c

s390/virtio_ccw: Fix dma_parm pointer not set up

2024-10-10 15:32:43 +02:00