[PATCH 2/3] ARM: ixp4xx: avoid warning about ioport_map() macro argument processing

From: Arnd Bergmann
Date: Fri Feb 05 2016 - 11:21:49 EST


We get a harmless compiler warning when building the cs89x0 driver
for ixp4xx:

drivers/net/ethernet/cirrus/cs89x0.c: In function 'cs89x0_ioport_probe':
drivers/net/ethernet/cirrus/cs89x0.c:1602:28: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
io_mem = ioport_map(ioport & ~3, NETCARD_IO_EXTENT);

Simply adding parentheses in the macro avoids the warning

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
arch/arm/mach-ixp4xx/include/mach/io.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-ixp4xx/include/mach/io.h b/arch/arm/mach-ixp4xx/include/mach/io.h
index d04d3ec97ac0..d8c2a4dc54d7 100644
--- a/arch/arm/mach-ixp4xx/include/mach/io.h
+++ b/arch/arm/mach-ixp4xx/include/mach/io.h
@@ -534,7 +534,7 @@ static inline void iowrite32_rep(void __iomem *addr, const void *vaddr,
#endif
}

-#define ioport_map(port, nr) ((void __iomem*)(port + PIO_OFFSET))
+#define ioport_map(port, nr) ((void __iomem*)((port) + PIO_OFFSET))
#define ioport_unmap(addr)
#endif /* CONFIG_PCI */

--
2.7.0