iommu/exynos: Remove dead code (set_prefbuf)

exynos_sysmmu_set_prefbuf() is not called any where.

Signed-off-by: Grant Grundler <grundler@chromium.org>
Reviewed-by: Cho KyongHo <pullip.cho@samsung.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 3f32d64..0740189 100644 (file)
--- 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)
 {