Re: USB mass storage and ARM cache coherency

[Catalin Marinas]

On Tue, 2010-02-02 at 06:39 +0000, Paul Mundt wrote:
> On Mon, Feb 01, 2010 at 05:29:14PM +0000, Catalin Marinas wrote:
> > diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
> > index 27b8f7c..4d3eeee 100644
> > --- a/drivers/usb/host/isp1760-hcd.c
> > +++ b/drivers/usb/host/isp1760-hcd.c
> > @@ -18,6 +18,8 @@
> >  #include <linux/uaccess.h>
> >  #include <linux/io.h>
> >  #include <asm/unaligned.h>
> > +#include <asm/cacheflush.h>
> > +#include <asm/memory.h>
> 
> asm/memory.h isn't a portable header. If you are including it for
> virt_to_page(), linux/io.h should already bring that in via asm/io.h.
> If arm doesn't bring in virt_to_page() through its asm/io.h, then fix the
> headers there please.

In the ARM case, yes, it brings virt_to_page() but I'm not sure that's
the case for the other architectures. I think a better header is
linux/mm.h which already uses this function in virt_to_head_page().

-- 
Catalin

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