linux-kernel - [PATCH 3.2 26/34] usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG

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Message-ID: <lsq.1400244441.43636218@decadent.org.uk>
Date:	Fri, 16 May 2014 13:47:21 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	"David Cohen" <david.a.cohen@...ux.intel.com>,
	"Mathias Nyman" <mathias.nyman@...ux.intel.com>
Subject: [PATCH 3.2 26/34] usb/xhci: fix compilation warning when
 !CONFIG_PCI && !CONFIG_PM

3.2.59-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: David Cohen <david.a.cohen@...ux.intel.com>

commit 01bb59ebffdec314da8da66266edf29529372f9b upstream.

When CONFIG_PCI and CONFIG_PM are not selected, xhci.c gets this
warning:
drivers/usb/host/xhci.c:409:13: warning: ‘xhci_msix_sync_irqs’ defined
but not used [-Wunused-function]

Instead of creating nested #ifdefs, this patch fixes it by defining the
xHCI PCI stubs as inline.

This warning has been in since 3.2 kernel and was
caused by commit 421aa841a134f6a743111cf44d0c6d3b45e3cf8c
"usb/xhci: hide MSI code behind PCI bars", but wasn't noticed
until 3.13 when a configuration with these options was tried

Signed-off-by: David Cohen <david.a.cohen@...ux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/usb/host/xhci.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -378,16 +378,16 @@ static int xhci_try_enable_msi(struct us
 
 #else
 
-static int xhci_try_enable_msi(struct usb_hcd *hcd)
+static inline int xhci_try_enable_msi(struct usb_hcd *hcd)
 {
 	return 0;
 }
 
-static void xhci_cleanup_msix(struct xhci_hcd *xhci)
+static inline void xhci_cleanup_msix(struct xhci_hcd *xhci)
 {
 }
 
-static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
+static inline void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
 {
 }
 

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