[PATCH 4.18 20/34] usb: roles: intel_xhci: Fix Unbalanced pm_runtime_enable

Greg Kroah-Hartman
2018-11-09T07:47:29Z

From: Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>

commit 009b1948e153ae448f62f1887e2b58d0e05db51b upstream.

Add missing pm_runtime_disable() to remove(), in order to avoid
an Unbalanced pm_runtime_enable when the module is removed and
re-probed.

Error log:
root@intel-corei7-64:~# modprobe -r intel_xhci_usb_role_switch
root@intel-corei7-64:~# modprobe intel_xhci_usb_role_switch
intel_xhci_usb_sw intel_xhci_usb_sw: Unbalanced pm_runtime_enable!

Fixes: cb2968468605 (usb: roles: intel_xhci: Enable runtime PM)
Cc: <stable@vger.kernel.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/roles/intel-xhci-usb-role-switch.c | 2 ++
1 file changed, 2 insertions(+)

--- a/drivers/usb/roles/intel-xhci-usb-role-switch.c
+++ b/drivers/usb/roles/intel-xhci-usb-role-switch.c
@@ -161,6 +161,8 @@ static int intel_xhci_usb_remove(struct
{
struct intel_xhci_usb_data *data = platform_get_drvdata(pdev);

+ pm_runtime_disable(&pdev->dev);
+
usb_role_switch_unregister(data->role_sw);
return 0;
}