linux-kernel - [PATCH 6/7] drm/tilcdc: clean up ifdef hacks around iowrite64

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Date:   Thu, 22 Jun 2017 10:48:16 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-ntb@...glegroups.com, linux-alpha@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-crypto@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Stephen Bates <sbates@...thlin.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Jyri Sarha <jsarha@...com>,
        Tomi Valkeinen <tomi.valkeinen@...com>,
        David Airlie <airlied@...ux.ie>
Subject: [PATCH 6/7] drm/tilcdc: clean up ifdef hacks around iowrite64

Now that we can expect iowrite64 to always exist the hack is no longer
necessary so we just call iowrite64 directly.

Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
Cc: Jyri Sarha <jsarha@...com>
Cc: Tomi Valkeinen <tomi.valkeinen@...com>
Cc: David Airlie <airlied@...ux.ie>
---
 drivers/gpu/drm/tilcdc/tilcdc_regs.h | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
index e9ce725698a9..0b901405f30a 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
@@ -133,13 +133,7 @@ static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data)
 	struct tilcdc_drm_private *priv = dev->dev_private;
 	void __iomem *addr = priv->mmio + reg;
 
-#ifdef iowrite64
 	iowrite64(data, addr);
-#else
-	__iowmb();
-	/* This compiles to strd (=64-bit write) on ARM7 */
-	*(u64 __force *)addr = __cpu_to_le64(data);
-#endif
 }
 
 static inline u32 tilcdc_read(struct drm_device *dev, u32 reg)
-- 
2.11.0