Thread (21 messages) flat view 21 messages, 6 authors, 2015-03-23

Re: [PATCH 1/1] Add virtio-input driver.

From: Gerd Hoffmann <kraxel@redhat.com>
Date: 2015-03-23 13:45:05
Also in: lkml

  Hi,
quoted
At least, this needs a comment explaining what the function does,
and maybe wrap it in a helper like virtio_input_bitmap_copy or
virtio_bitmap_or.
Can do that, sure.
Well, the function where this is in already cares about the bitmap copy
only.  Can add a comment though.
quoted
You are doing leXXX everywhere, that's VERSION_1 dependency.
virtio_cread will do byteswaps differently without VERSION_1.
Just don't go there.
Changed that for v2, for the config space structs.  They have normal u32
in there now.  virtio_cread() wants it this way.
I liked the __le32 in the config space structs more though, so I've
waded through the virtio_config.h header file.

To me it looks like we need separate virtio_cread() versions for
non-transitional drivers, which do __le32 -> u32 translation instead of
__virtio32 -> u32 translation, so I can have __le32 types in the config
space structs.

Or I could use vdev->config->get() directly instead of virtio_cread, but
I'll loose sparse checking that way.

Hmm.  Recommendations?  Better ideas?

cheers,
  Gerd
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