On Mon, 6 Jun 2022 at 10:25, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
On Mon, Jun 06, 2022 at 10:41:03AM +0200, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@xxxxxxxx>
The virt_to_bus/bus_to_virt interface has been deprecated for
decades. After Jakub Kicinski put a lot of work into cleaning out the
network drivers using them, there are only a couple of other drivers
left, which can all be removed or otherwise cleaned up, to remove the
old interface for good.
Any out of tree drivers using virt_to_bus() should be converted to
using the dma-mapping interfaces, typically dma_alloc_coherent()
or dma_map_single()).
There are a few m68k and ppc32 specific drivers that keep using the
interfaces, but these are all guarded with architecture-specific
Kconfig dependencies, and are not actually broken.
There are still a number of drivers that are using virt_to_phys()
and phys_to_virt() in place of dma-mapping operations, and these
are often broken, but they are out of scope for this series.
I'll take patches 1 and 2 right now through my staging tree if that's
ok.
Hi,
I'd love to say that I could fix this stuff up, however I've lacked access to
suitable hardware for a long time now and don't foresee that changing any
time soon...
Martyn
thanks,
greg k-h
