linux-kernel - [PATCH] usb: xhci: make symbols static

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Date:   Tue, 19 May 2020 15:00:02 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Vinod Koul <vkoul@...nel.org>,
        Christian Lamparter <chunkeey@...glemail.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        kbuild test robot <lkp@...el.com>
Subject: [PATCH] usb: xhci: make symbols static

When renesas module is not built, we get compiler warning on xhci driver
with W=1

  CC [M]  drivers/usb/host/xhci-rcar.o
drivers/usb/host/xhci-pci.h:13:5: warning: no previous prototype for ‘renesas_xhci_check_request_fw’ [-Wmissing-prototypes]
 int renesas_xhci_check_request_fw(struct pci_dev *dev,
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/host/xhci-pci.h:19:6: warning: no previous prototype for ‘renesas_xhci_pci_exit’ [-Wmissing-prototypes]
 void renesas_xhci_pci_exit(struct pci_dev *dev) { };
      ^~~~~~~~~~~~~~~~~~~~~

We have defined these symbols when CONFIG_USB_XHCI_PCI_RENESAS is not
defined, but missed making then static.

Reported-by: kbuild test robot <lkp@...el.com>
Fixes: 8bd5741e3145 ("usb: renesas-xhci: Add the renesas xhci driver")
Signed-off-by: Vinod Koul <vkoul@...nel.org>
---
 drivers/usb/host/xhci-pci.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/xhci-pci.h b/drivers/usb/host/xhci-pci.h
index 4d749556e350..acd7cf0a1706 100644
--- a/drivers/usb/host/xhci-pci.h
+++ b/drivers/usb/host/xhci-pci.h
@@ -10,13 +10,13 @@ int renesas_xhci_check_request_fw(struct pci_dev *dev,
 void renesas_xhci_pci_exit(struct pci_dev *dev);
 
 #else
-int renesas_xhci_check_request_fw(struct pci_dev *dev,
-				  const struct pci_device_id *id)
+static int renesas_xhci_check_request_fw(struct pci_dev *dev,
+					 const struct pci_device_id *id)
 {
 	return 0;
 }
 
-void renesas_xhci_pci_exit(struct pci_dev *dev) { };
+static void renesas_xhci_pci_exit(struct pci_dev *dev) { };
 
 #endif
 
-- 
2.25.4