From: Ming Lei <ming.lei@canonical.com>
To: "David S. Miller" <davem@davemloft.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Oliver Neukum <oneukum@suse.de>,
Sarah Sharp <sarah.a.sharp@linux.intel.com>,
netdev@vger.kernel.org, linux-usb@vger.kernel.org,
Ming Lei <ming.lei@canonical.com>,
Alan Stern <stern@rowland.harvard.edu>
Subject: [PATCH v1 2/4] USB: XHCI: mark no_sg_limit
Date: Sat, 3 Aug 2013 10:46:35 +0800 [thread overview]
Message-ID: <1375497998-7424-3-git-send-email-ming.lei@canonical.com> (raw)
In-Reply-To: <1375497998-7424-1-git-send-email-ming.lei@canonical.com>
This patch marks all xHCI controllers as no_sg_limit since
xHCI supports building packet from discontinuous buffers.
Cc: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
---
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
next prev parent reply other threads:[~2013-08-03 2:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-03 2:46 [PATCH v1 0/4] USB & USBNET: loose SG check and support usbnet DMA SG Ming Lei
2013-08-03 2:46 ` [PATCH v1 1/4] USB: introduce usb_device_no_sg_limit() helper Ming Lei
2013-08-03 15:53 ` Alan Stern
2013-08-04 0:22 ` Ming Lei
2013-08-03 2:46 ` Ming Lei [this message]
2013-08-03 2:46 ` [PATCH v1 3/4] USBNET: support DMA SG Ming Lei
[not found] ` <1375497998-7424-4-git-send-email-ming.lei-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2013-08-03 5:56 ` Oliver Neukum
[not found] ` <1375509413.2201.2.camel-B2T3B9s34ElbnMAlSieJcQ@public.gmane.org>
2013-08-03 19:07 ` David Miller
2013-08-04 0:19 ` Ming Lei
2013-08-03 2:46 ` [PATCH v1 4/4] USBNET: ax88179_178a: enable tso if usb host supports sg dma Ming Lei
2013-08-04 0:28 ` [PATCH v1 0/4] USB & USBNET: loose SG check and support usbnet DMA SG Ming Lei
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