[PATCH] usbip: Fix USB device hang due to wrong enabling of scatter-gather

From: Yuyang Du
Date: Wed Nov 29 2017 - 21:24:20 EST


The previous USB3 SuperSpeed enabling patches mistakenly enabled
URB scatter-gather chaining, which is actually not supported by
the VHCI HCD. This patch fixes that.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=197867
Fixes: 03cd00d538a6feb ("usbip: vhci-hcd: Set the vhci structure up to work")
Reported-by: Juan Zea <juan.zea@xxxxxxxxxx>
Signed-off-by: Yuyang Du <yuyang.du@xxxxxxxxx>
---
drivers/usb/usbip/vhci_hcd.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c
index 713e941..6b3278c 100644
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -1098,7 +1098,6 @@ static int hcd_name_to_id(const char *name)
static int vhci_setup(struct usb_hcd *hcd)
{
struct vhci *vhci = *((void **)dev_get_platdata(hcd->self.controller));
- hcd->self.sg_tablesize = ~0;
if (usb_hcd_is_primary_hcd(hcd)) {
vhci->vhci_hcd_hs = hcd_to_vhci_hcd(hcd);
vhci->vhci_hcd_hs->vhci = vhci;
--
2.7.4