linux-kernel - [PATCH] iommu/exynos: remove dead code (set

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Message-Id: <1372781307-7906-1-git-send-email-grundler@chromium.org>
Date:	Tue,  2 Jul 2013 09:08:27 -0700
From:	Grant Grundler <grundler@...omium.org>
To:	Joerg Roedel <joro@...tes.org>,
	Sachin Kamat <sachin.kamat@...aro.org>
Cc:	Jiri Kosina <jkosina@...e.cz>,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Kukjin Kim <kgene.kim@...sung.com>,
	linux-kernel@...r.kernel.org,
	Grant Grundler <grundler@...omium.org>
Subject: [PATCH] iommu/exynos: remove dead code (set_prefbuf)

exynos_sysmmu_set_prefbuf() is not called any where.

Signed-off-by: Grant Grundler <grundler@...omium.org>
---
 drivers/iommu/exynos-iommu.c | 44 --------------------------------------------
 1 file changed, 44 deletions(-)

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 3f32d64..0740189 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -247,50 +247,6 @@ static void __sysmmu_set_prefbuf(void __iomem *sfrbase, unsigned long base,
 	__raw_writel(size - 1 + base,  sfrbase + REG_PB0_EADDR + idx * 8);
 }
 
-void exynos_sysmmu_set_prefbuf(struct device *dev,
-				unsigned long base0, unsigned long size0,
-				unsigned long base1, unsigned long size1)
-{
-	struct sysmmu_drvdata *data = dev_get_drvdata(dev->archdata.iommu);
-	unsigned long flags;
-	int i;
-
-	BUG_ON((base0 + size0) <= base0);
-	BUG_ON((size1 > 0) && ((base1 + size1) <= base1));
-
-	read_lock_irqsave(&data->lock, flags);
-	if (!is_sysmmu_active(data))
-		goto finish;
-
-	for (i = 0; i < data->nsfrs; i++) {
-		if ((readl(data->sfrbases[i] + REG_MMU_VERSION) >> 28) == 3) {
-			if (!sysmmu_block(data->sfrbases[i]))
-				continue;
-
-			if (size1 == 0) {
-				if (size0 <= SZ_128K) {
-					base1 = base0;
-					size1 = size0;
-				} else {
-					size1 = size0 -
-						ALIGN(size0 / 2, SZ_64K);
-					size0 = size0 - size1;
-					base1 = base0 + size0;
-				}
-			}
-
-			__sysmmu_set_prefbuf(
-					data->sfrbases[i], base0, size0, 0);
-			__sysmmu_set_prefbuf(
-					data->sfrbases[i], base1, size1, 1);
-
-			sysmmu_unblock(data->sfrbases[i]);
-		}
-	}
-finish:
-	read_unlock_irqrestore(&data->lock, flags);
-}
-
 static void __set_fault_handler(struct sysmmu_drvdata *data,
 					sysmmu_fault_handler_t handler)
 {
-- 
1.8.3

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