diff options
| author |   Lu Baolu <baolu.lu@linux.intel.com> | 2017-01-03 18:28:44 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-03 17:37:32 +0100 |
| commit | 90797aee5d6902b49a453c97d83c326408aeb5a8 (patch) | |
| tree | 73b3a5c7aa02cca8ce7040e1cfd8aea63f000bf0 /drivers/usb | |
| parent | xhci: free xhci virtual devices with leaf nodes first (diff) | |
| download | linux-dev-90797aee5d6902b49a453c97d83c326408aeb5a8.tar.xz linux-dev-90797aee5d6902b49a453c97d83c326408aeb5a8.zip | |
usb: xhci: fix return value of xhci_setup_device()
xhci_setup_device() should return failure with correct error number
when xhci host has died, removed or halted.
During usb device enumeration, if usb host is not accessible (died,
removed or halted), the hc_driver->address_device() should return
a corresponding error code to usb core. But current xhci driver just
returns success. This misleads usb core to continue the enumeration
by reading the device descriptor, which will result in failure, and
users will get a misleading message like "device descriptor read/8,
error -110".
Cc: <stable@vger.kernel.org> # v4.3+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 1cd56417cbec..0c8deb9ed42d 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3787,8 +3787,10 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev, mutex_lock(&xhci->mutex); - if (xhci->xhc_state) /* dying, removing or halted */ + if (xhci->xhc_state) { /* dying, removing or halted */ + ret = -ESHUTDOWN; goto out; + } if (!udev->slot_id) { xhci_dbg_trace(xhci, trace_xhci_dbg_address, |