On Tuesday 24 February 2009, Alan Stern wrote:
> This patch (as1220) automatically disables stalls when g_file_storage
> finds itself running with an Atmel device controller, because the
> Atmel hardware/driver isn't capable of halting bulk endpoints
> correctly.
>
> Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> Reported-by: Stanislaw Gruszka <stf_xl@xxxxx>
Acked-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Thanks.
>
> ---
>
> Index: usb-2.6/drivers/usb/gadget/file_storage.c
> ===================================================================
> --- usb-2.6.orig/drivers/usb/gadget/file_storage.c
> +++ usb-2.6/drivers/usb/gadget/file_storage.c
> @@ -3879,7 +3879,11 @@ static int __init check_parameters(struc
> mod_data.protocol_type = USB_SC_SCSI;
> mod_data.protocol_name = "Transparent SCSI";
>
> - if (gadget_is_sh(fsg->gadget))
> + /* Some peripheral controllers are known not to be able to
> + * halt bulk endpoints correctly. If one of them is present,
> + * disable stalls.
> + */
> + if (gadget_is_sh(fsg->gadget) || gadget_is_at91(fsg->gadget))
> mod_data.can_stall = 0;
>
> if (mod_data.release == 0xffff) { // Parameter wasn't set
>
> --
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>
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