Re: [PATCH] usb:musb:musb_host: Handle highmem in PIO mode

[Greg KH]

On Thu, Aug 02, 2012 at 12:06:42PM +0530, Virupax Sadashivpetimath wrote:
> In case of USB bulk transfer, when himem page
> is received, the usb_sg_init function sets the
> urb transfer buffer to NULL. When such URB
> transfer is handled, kernel crashes in PIO mode.
> Handle this by mapping the highmem buffer in PIO mode.
> 
> Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@xxxxxxxxxxxxxx>

Why is this not a problem in any other host controller?  Are you sure
this fix is correct?  Why do you need to modify the struct urb for this?

greg k-h
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