On Sun, Jun 22, 2014 at 02:23:15PM +0200, Marek Vasut wrote:
> On Sunday, June 22, 2014 at 01:58:08 PM, Corentin LABBE wrote:
> [...]
> > >> + * This program is free software; you can redistribute it and/or modify
> > >> + * it under the terms of the GNU General Public License as published by
> > >> + * the Free Software Foundation version 2 of the License
> > >
> > > The license text seems incomplete.
> > > [...]
> >
> > I will replace it with a simplier line "Licensed under the GPL-2."
>
> I'd suggest you to use the SPDX license identifiers then, but that's not
> something the kernel crowd agreed upon yet IIRC.Therefore , just make the text
> complete please.
Marek,
The full text of the first paragraph (in COPYING) is:
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
which is deemed to be entirely sufficient; quoting the full text is
discouraged, especially when it includes the FSF address. It is also
acceptable to restrict it to version 2 only, in which case something
like this can be used:
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 as
published by the Free Software Foundation.
Of course, it's up to the author to make up their own mind at the end
of the day.
> Oh, ok, good question -- dear list, shall one use sg_page()+kmap or sg_virt()?
sg_page() + kmap() is preferred, because sg_virt() fails with highmem.
Using sg_virt() means you restrict the driver to non-highmem memory,
and if the kernel wants to place the data into a highmem page, it will
have to use bounce buffers (so it's inefficient).
What's even better is to use the scatterlist iterator, which will handle
this for you. See the sg_miter_*() functions.
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