xhci: refuse loading if nousb is used

commit 1eaf35e4dd592c59041bc1ed3248c46326da1f5f upstream.

The module should fail to load.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 47b25542a99c6f0565a58b6adbea7f6cf3601116..6888e9a956d427fe6f874a7512260ea1505ec8df 100644 (file)
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -4891,6 +4891,10 @@ static int __init xhci_hcd_init(void)
        BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8);
        /* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */
        BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
+
+       if (usb_disabled())
+               return -ENODEV;
+
        return 0;
 unreg_pci:
        xhci_unregister_pci();