From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ming Lei Subject: [PATCH 2/4] USB: XHCI: mark no_sg_limit Date: Wed, 31 Jul 2013 18:51:47 +0800 Message-ID: <1375267909-30373-3-git-send-email-ming.lei@canonical.com> References: <1375267909-30373-1-git-send-email-ming.lei@canonical.com> Cc: Oliver Neukum , Freddy Xin , Eric Dumazet , Ben Hutchings , Grant Grundler , netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Ming Lei , Sarah Sharp To: "David S. Miller" , Greg Kroah-Hartman Return-path: In-Reply-To: <1375267909-30373-1-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org This patch marks all xHCI controllers as no_sg_limit since xHCI supports building packet from discontinuous buffers. Cc: Sarah Sharp Signed-off-by: Ming Lei --- drivers/usb/host/xhci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 2c49f00..541b155 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -4841,6 +4841,10 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) /* Accept arbitrarily long scatter-gather lists */ hcd->self.sg_tablesize = ~0; + + /* support to build packet from discontinuous buffers */ + hcd->self.no_sg_limit = 1; + /* XHCI controllers don't stop the ep queue on short packets :| */ hcd->self.no_stop_on_short = 1; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html