linux-kernel - [PATCH v2 4/4] usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG

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Message-Id: <1398442816-32538-5-git-send-email-mathias.nyman@linux.intel.com>
Date:	Fri, 25 Apr 2014 19:20:16 +0300
From:	Mathias Nyman <mathias.nyman@...ux.intel.com>
To:	<gregkh@...uxfoundation.org>
Cc:	<linux-usb@...r.kernel.org>, <sarah.a.sharp@...ux.intel.com>,
	<linux-kernel@...r.kernel.org>,
	David Cohen <david.a.cohen@...ux.intel.com>,
	stable@...r.kernel.org,
	Mathias Nyman <mathias.nyman@...ux.intel.com>
Subject: [PATCH v2 4/4] usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG_PM

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

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>
Cc: stable@...r.kernel.org # 3.2
Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com>
---
 drivers/usb/host/xhci.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 988ed5f..3008369 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -408,16 +408,16 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
 
 #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)
 {
 }
 
-- 
1.8.3.2

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