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14c7579376
At least since commit334304ac2b("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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.