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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>
This commit is contained in:
Arnd Bergmann 2016-01-15 13:04:01 +01:00
parent 293ea3d0ab
commit 1c1953f351
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mach-mmp/devices.c
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@ -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[] = {