Subject: [PATCH 1/7] drm/tilcdc: don't use volatile with iowrite64

From: Logan Gunthorpe <[email-masked]>
Date: Thu, 22 Jun 2017 10:48:11 -0600

This is a prep patch for adding a universal iowrite64.

The patch is to prevent compiler warnings when we add iowrite64 that
would occur because there is an unnecessary volatile in this driver.

Signed-off-by: Logan Gunthorpe <[email-masked]>
Cc: Jyri Sarha <[email-masked]>
Cc: Tomi Valkeinen <[email-masked]>
Cc: David Airlie <[email-masked]>
---
 drivers/gpu/drm/tilcdc/tilcdc_regs.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
index 9d528c0a67a4..e9ce725698a9 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
@@ -131,14 +131,14 @@ static inline void tilcdc_write(struct drm_device *dev, u32 reg, u32 data)
 static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data)
 {
 	struct tilcdc_drm_private *priv = dev->dev_private;
-	volatile void __iomem *addr = priv->mmio + reg;
+	void __iomem *addr = priv->mmio + reg;
 
 #ifdef iowrite64
 	iowrite64(data, addr);
 #else
 	__iowmb();
 	/* This compiles to strd (=64-bit write) on ARM7 */
-	*(volatile u64 __force *)addr = __cpu_to_le64(data);
+	*(u64 __force *)addr = __cpu_to_le64(data);
 #endif
 }
 
-- 
2.11.0