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usb: xhci: avoid renesas_usb_fw.mem when it's unusable

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Commit a66d21d7db ("usb: xhci: Add support for Renesas controller with
memory") added renesas_usb_fw.mem firmware reference to xhci-pci.  Thus
modinfo indicates xhci-pci.ko has "firmware: renesas_usb_fw.mem".  But
the firmware is only actually used with CONFIG_USB_XHCI_PCI_RENESAS.  An
unusable firmware reference can trigger safety checkers which look for
drivers with unmet firmware dependencies.

Avoid referring to renesas_usb_fw.mem in circumstances when it cannot be
loaded (when CONFIG_USB_XHCI_PCI_RENESAS isn't set).

Fixes: a66d21d7db ("usb: xhci: Add support for Renesas controller with memory")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Thelen <gthelen@google.com>
Link: https://lore.kernel.org/r/20210702071224.3673568-1-gthelen@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Thelen 2021-07-02 00:12:24 -07:00 committed by Greg Kroah-Hartman
parent 4bb233b7ba
commit 0665e38731
1 changed files with 7 additions and 0 deletions
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7
drivers/usb/host/xhci-pci.c
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@ -636,7 +636,14 @@ static const struct pci_device_id pci_ids[] = {
{ /* end: all zeroes */ }
};
MODULE_DEVICE_TABLE(pci, pci_ids);
/*
* Without CONFIG_USB_XHCI_PCI_RENESAS renesas_xhci_check_request_fw() won't
* load firmware, so don't encumber the xhci-pci driver with it.
*/
#if IS_ENABLED(CONFIG_USB_XHCI_PCI_RENESAS)
MODULE_FIRMWARE("renesas_usb_fw.mem");
#endif
/* pci driver glue; this is a "new style" PCI driver module */
static struct pci_driver xhci_pci_driver = {