[PATCH v3 1/8] scsi: core: fix the dma_max_mapping_size call

[Gerd Hoffmann]

On Thu, Aug 08, 2019 at 11:36:55AM +0200, Gerd Hoffmann wrote:
> From: Christoph Hellwig <hch at lst.de>
> 
> We should only call dma_max_mapping_size for devices that have a DMA mask
> set, otherwise we can run into a NULL pointer dereference that will crash
> the system.
> 
> Also we need to do right shift to get the sectors from the size in bytes,
> not a left shift.

Oops, that wasn't meant to be re-sent, sorry.

drm-misc-next maintainers: any chance for a backmerge to pick up this fix,
so I don't have to carry it in my branches?

thanks,
  Gerd