4.4-stable review patch. If anyone has any objections, please let me know.
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From: Ben Hutchings ben.hutchings@codethink.co.uk
This is a stable-only fix for the backport of commit 5d9b70f7d52e ("xhci: Don't add a virt_dev to the devs array before it's fully allocated").
In branches that predate commit c5628a2af83a ("xhci: remove endpoint ring cache") there is an additional failure path in xhci_alloc_virt_device() where ring cache allocation fails, in which case we need to free the ring allocated for endpoint 0.
Signed-off-by: Ben Hutchings ben.hutchings@codethink.co.uk Cc: Mathias Nyman mathias.nyman@intel.com --- This is build-tested only.
Ben.
drivers/usb/host/xhci-mem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1071,7 +1071,8 @@ int xhci_alloc_virt_device(struct xhci_h
return 1; fail: - + if (dev->eps[0].ring) + xhci_ring_free(xhci, dev->eps[0].ring); if (dev->in_ctx) xhci_free_container_ctx(xhci, dev->in_ctx); if (dev->out_ctx)