From 2e1529ad45e63c693e6c0d9d9bc3d1473ec4d884 Mon Sep 17 00:00:00 2001
From: Andrea Righi <arighi@develer.com>
Date: Mon, 28 Jun 2010 16:56:45 +0200
Subject: [PATCH] --- yaml --- r: 208001 b: refs/heads/master c:
 4307a28eb0128417d9a2b9d858d2bce70ee5b383 h: refs/heads/master i:   207999:
 681fdc8a6c79578ecc6580fe15d5b3e208a4b3c9 v: v3

---
 [refs]                            | 2 +-
 trunk/drivers/usb/core/hcd.c      | 5 +++++
 trunk/drivers/usb/host/ehci-hcd.c | 3 ++-
 3 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index cfb2c223e1d2..6773bfc87e6b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e10fa4787f1fb9c8738dff955c272f30b7b63134
+refs/heads/master: 4307a28eb0128417d9a2b9d858d2bce70ee5b383
diff --git a/trunk/drivers/usb/core/hcd.c b/trunk/drivers/usb/core/hcd.c
index 0358c05e6e8a..c5753c797735 100644
--- a/trunk/drivers/usb/core/hcd.c
+++ b/trunk/drivers/usb/core/hcd.c
@@ -1218,6 +1218,11 @@ static int hcd_alloc_coherent(struct usb_bus *bus,
 {
 	unsigned char *vaddr;
 
+	if (*vaddr_handle == NULL) {
+		WARN_ON_ONCE(1);
+		return -EFAULT;
+	}
+
 	vaddr = hcd_buffer_alloc(bus, size + sizeof(vaddr),
 				 mem_flags, dma_handle);
 	if (!vaddr)
diff --git a/trunk/drivers/usb/host/ehci-hcd.c b/trunk/drivers/usb/host/ehci-hcd.c
index 2a19336c9824..2e704fa3cedf 100644
--- a/trunk/drivers/usb/host/ehci-hcd.c
+++ b/trunk/drivers/usb/host/ehci-hcd.c
@@ -629,7 +629,8 @@ static int ehci_init(struct usb_hcd *hcd)
 	ehci->command = temp;
 
 	/* Accept arbitrarily long scatter-gather lists */
-	hcd->self.sg_tablesize = ~0;
+	if (!(hcd->driver->flags & HCD_LOCAL_MEM))
+		hcd->self.sg_tablesize = ~0;
 	return 0;
 }