From: Andiry Xu <andiry.xu@amd.com>
Date: Mon, 5 Mar 2012 09:49:38 +0000 (+0800)
Subject: xHCI: update sg tablesize
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fdaf8b3183d126d70f19e13c690c762c65b28a5d;p=linux-beck.git

xHCI: update sg tablesize

Update sg tablesize as we can expand the ring now.

Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
---

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index dec5b2dc298c..f9f161fa66ad 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -3968,7 +3968,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 	int			retval;
 	u32			temp;
 
-	hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 2;
+	/* Accept arbitrarily long scatter-gather lists */
+	hcd->self.sg_tablesize = ~0;
 
 	if (usb_hcd_is_primary_hcd(hcd)) {
 		xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);