powerpc/iommu: Code cleanup for cell/iommu.c

This part was commented from commit 165785e5c0be ("[POWERPC] Cell
iommu support") in about 17 years before.

If there are no plans to enable this part code in the future,
we can remove this dead code.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240125082637.532826-1-chentao@kylinos.cn

diff --git a/arch/powerpc/platforms/cell/iommu.c b/arch/powerpc/platforms/cell/iommu.c
index 1202a69b0a2088a8ecee3a14c091c362fbf6cfb5..4cd9c0de22c2bd18e6ad7e95344686082d7b869b 100644 (file)
--- a/arch/powerpc/platforms/cell/iommu.c
+++ b/arch/powerpc/platforms/cell/iommu.c
@@ -424,23 +424,6 @@ static void __init cell_iommu_setup_hardware(struct cbe_iommu *iommu,
        cell_iommu_enable_hardware(iommu);
 }
 
-#if 0/* Unused for now */
-static struct iommu_window *find_window(struct cbe_iommu *iommu,
-               unsigned long offset, unsigned long size)
-{
-       struct iommu_window *window;
-
-       /* todo: check for overlapping (but not equal) windows) */
-
-       list_for_each_entry(window, &(iommu->windows), list) {
-               if (window->offset == offset && window->size == size)
-                       return window;
-       }
-
-       return NULL;
-}
-#endif
-
 static inline u32 cell_iommu_get_ioid(struct device_node *np)
 {
        const u32 *ioid;