From ce459ec1d278b19be8e0719dbfd47dd1d6687bfb Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Feb 2009 16:19:47 -0500 Subject: USB: g_file_storage: automatically disable stalls under Atmel 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. Reported-by: Stanislaw Gruszka Signed-off-by: Alan Stern Acked-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/file_storage.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers/usb') diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index b10fa31cc91..1ab9dac7e12 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -3879,7 +3879,11 @@ static int __init check_parameters(struct fsg_dev *fsg) 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 -- cgit v1.2.3