From: Logan Gunthorpe Subject: [PATCH 1/7] drm/tilcdc: don't use volatile with iowrite64 Date: Thu, 22 Jun 2017 10:48:11 -0600 Message-ID: <20170622164817.25515-2-logang@deltatee.com> References: <20170622164817.25515-1-logang@deltatee.com> Cc: Arnd Bergmann , Greg Kroah-Hartman , Stephen Bates , Logan Gunthorpe , Jyri Sarha , Tomi Valkeinen , David Airlie To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-ntb@googlegroups.com, linux-alpha@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-crypto@vger.kernel.org, dri-devel@lists.freedesktop.org Return-path: In-Reply-To: <20170622164817.25515-1-logang@deltatee.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org 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 Cc: Jyri Sarha Cc: Tomi Valkeinen Cc: David Airlie --- 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