[PATCH 07/21] PCI: designware: Make use of IS_ALIGNED()

[Andrey Smirnov]

Make the intent a bit more clear as well as get rid of explicit
arithmetic by using IS_ALIGNED() to determine if "addr" is aligned to
"size". No functional change intended.

Cc: Lorenzo Pieralisi <lorenzo.pieral...@arm.com>
Cc: Bjorn Helgaas <bhelg...@google.com>
Cc: Fabio Estevam <fabio.este...@nxp.com>
Cc: Chris Healy <cphe...@gmail.com>
Cc: Lucas Stach <l.st...@pengutronix.de>
Cc: Leonard Crestez <leonard.cres...@nxp.com>
Cc: "A.s. Dong" <aisheng.d...@nxp.com>
Cc: Richard Zhu <hongxing....@nxp.com>
Cc: linux-...@nxp.com
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-...@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
---
 drivers/pci/controller/dwc/pcie-designware.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware.c 
b/drivers/pci/controller/dwc/pcie-designware.c
index 93ef8c31fb39..67236379c61a 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -22,7 +22,7 @@
 
 int dw_pcie_read(void __iomem *addr, int size, u32 *val)
 {
-       if ((uintptr_t)addr & (size - 1)) {
+       if (!IS_ALIGNED((uintptr_t)addr, size)) {
                *val = 0;
                return PCIBIOS_BAD_REGISTER_NUMBER;
        }
@@ -43,7 +43,7 @@ int dw_pcie_read(void __iomem *addr, int size, u32 *val)
 
 int dw_pcie_write(void __iomem *addr, int size, u32 val)
 {
-       if ((uintptr_t)addr & (size - 1))
+       if (!IS_ALIGNED((uintptr_t)addr, size))
                return PCIBIOS_BAD_REGISTER_NUMBER;
 
        if (size == 4)
-- 
2.19.1