Re: USB mass storage and ARM cache coherency

From: Oliver Neukum
Date: Tue Feb 02 2010 - 06:48:24 EST


Am Montag, 1. Februar 2010 18:29:14 schrieb Catalin Marinas:
> + if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) == PIPE_BULK) {
> + void *ptr;
> + for (ptr = urb->transfer_buffer;
> + ptr < urb->transfer_buffer + urb->transfer_buffer_length;
> + ptr += PAGE_SIZE)
> + flush_dcache_page(virt_to_page(ptr));

Is it correct to limit this to BULK pipes?

Regards
Oliver

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