From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 15 Jan 2016 12:04:01 +0000 (+0100)
Subject: ARM: mmp: mark usb_dma_mask as __maybe_unused
X-Git-Tag: android-x86-8.1-r1~2971^2~12
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=1c1953f351263bdc0857326bde7ff95a43700b6c;p=android-x86%2Fkernel.git

ARM: mmp: mark usb_dma_mask as __maybe_unused

This variable may be used by some devices that each have their
on Kconfig symbol, or by none of them, and that causes a build
warning:

arch/arm/mach-mmp/devices.c:241:12: error: 'usb_dma_mask' defined but not used [-Werror=unused-variable]

Marking it __maybe_unused avoids the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---

diff --git a/arch/arm/mach-mmp/devices.c b/arch/arm/mach-mmp/devices.c
index 3330ac7cfbef..671c7a09ab3d 100644
--- a/arch/arm/mach-mmp/devices.c
+++ b/arch/arm/mach-mmp/devices.c
@@ -238,7 +238,7 @@ void pxa_usb_phy_deinit(void __iomem *phy_reg)
 #endif
 
 #if IS_ENABLED(CONFIG_USB_SUPPORT)
-static u64 usb_dma_mask = ~(u32)0;
+static u64 __maybe_unused usb_dma_mask = ~(u32)0;
 
 #if IS_ENABLED(CONFIG_USB_MV_UDC)
 struct resource pxa168_u2o_resources[] = {