Remove file ion_carveout_heap.c as its functions and definitions are not
used anywhere.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@xxxxxxxxx>
---
drivers/staging/android/ion/Kconfig | 9 --
drivers/staging/android/ion/Makefile | 1 -
.../staging/android/ion/ion_carveout_heap.c | 133 ------------------
3 files changed, 143 deletions(-)
delete mode 100644 drivers/staging/android/ion/ion_carveout_heap.c
diff --git a/drivers/staging/android/ion/Kconfig b/drivers/staging/android/ion/Kconfig
index 178df581a8fc..dff641451a89 100644
--- a/drivers/staging/android/ion/Kconfig
+++ b/drivers/staging/android/ion/Kconfig
@@ -18,15 +18,6 @@ config ION_SYSTEM_HEAP
Choose this option to enable the Ion system heap. The system heap
is backed by pages from the buddy allocator. If in doubt, say Y.
-config ION_CARVEOUT_HEAP
- bool "Ion carveout heap support"
- depends on ION
- help
- Choose this option to enable carveout heaps with Ion. Carveout heaps
- are backed by memory reserved from the system. Allocation times are
- typically faster at the cost of memory not being used. Unless you
- know your system has these regions, you should say N here.
-
config ION_CHUNK_HEAP
bool "Ion chunk heap support"
depends on ION
diff --git a/drivers/staging/android/ion/Makefile b/drivers/staging/android/ion/Makefile
index 17f3a7569e3d..0ac5465e2841 100644
--- a/drivers/staging/android/ion/Makefile
+++ b/drivers/staging/android/ion/Makefile
@@ -1,6 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_ION) += ion.o ion_heap.o
obj-$(CONFIG_ION_SYSTEM_HEAP) += ion_system_heap.o ion_page_pool.o
-obj-$(CONFIG_ION_CARVEOUT_HEAP) += ion_carveout_heap.o
obj-$(CONFIG_ION_CHUNK_HEAP) += ion_chunk_heap.o
obj-$(CONFIG_ION_CMA_HEAP) += ion_cma_heap.o
diff --git a/drivers/staging/android/ion/ion_carveout_heap.c b/drivers/staging/android/ion/ion_carveout_heap.c
deleted file mode 100644
index bb9d614767a2..000000000000
--- a/drivers/staging/android/ion/ion_carveout_heap.c
+++ /dev/null
@@ -1,133 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * ION Memory Allocator carveout heap helper
- *
- * Copyright (C) 2011 Google, Inc.
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/genalloc.h>
-#include <linux/io.h>
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-
-#include "ion.h"
-
-#define ION_CARVEOUT_ALLOCATE_FAIL -1
-
-struct ion_carveout_heap {
- struct ion_heap heap;
- struct gen_pool *pool;
-};
-
-static phys_addr_t ion_carveout_allocate(struct ion_heap *heap,
- unsigned long size)
-{
- struct ion_carveout_heap *carveout_heap =
- container_of(heap, struct ion_carveout_heap, heap);
- unsigned long offset = gen_pool_alloc(carveout_heap->pool, size);
-
- if (!offset)
- return ION_CARVEOUT_ALLOCATE_FAIL;
-
- return offset;
-}
-
-static void ion_carveout_free(struct ion_heap *heap, phys_addr_t addr,
- unsigned long size)
-{
- struct ion_carveout_heap *carveout_heap =
- container_of(heap, struct ion_carveout_heap, heap);
-
- if (addr == ION_CARVEOUT_ALLOCATE_FAIL)
- return;
-
- gen_pool_free(carveout_heap->pool, addr, size);
-}
-
-static int ion_carveout_heap_allocate(struct ion_heap *heap,
- struct ion_buffer *buffer,
- unsigned long size,
- unsigned long flags)
-{
- struct sg_table *table;
- phys_addr_t paddr;
- int ret;
-
- table = kmalloc(sizeof(*table), GFP_KERNEL);
- if (!table)
- return -ENOMEM;
- ret = sg_alloc_table(table, 1, GFP_KERNEL);
- if (ret)
- goto err_free;
-
- paddr = ion_carveout_allocate(heap, size);
- if (paddr == ION_CARVEOUT_ALLOCATE_FAIL) {
- ret = -ENOMEM;
- goto err_free_table;
- }
-
- sg_set_page(table->sgl, pfn_to_page(PFN_DOWN(paddr)), size, 0);
- buffer->sg_table = table;
-
- return 0;
-
-err_free_table:
- sg_free_table(table);
-err_free:
- kfree(table);
- return ret;
-}
-
-static void ion_carveout_heap_free(struct ion_buffer *buffer)
-{
- struct ion_heap *heap = buffer->heap;
- struct sg_table *table = buffer->sg_table;
- struct page *page = sg_page(table->sgl);
- phys_addr_t paddr = PFN_PHYS(page_to_pfn(page));
-
- ion_heap_buffer_zero(buffer);
-
- ion_carveout_free(heap, paddr, buffer->size);
- sg_free_table(table);
- kfree(table);
-}
-
-static struct ion_heap_ops carveout_heap_ops = {
- .allocate = ion_carveout_heap_allocate,
- .free = ion_carveout_heap_free,
- .map_user = ion_heap_map_user,
- .map_kernel = ion_heap_map_kernel,
- .unmap_kernel = ion_heap_unmap_kernel,
-};
-
-struct ion_heap *ion_carveout_heap_create(phys_addr_t base, size_t size)
-{
- struct ion_carveout_heap *carveout_heap;
- int ret;
-
- struct page *page;
-
- page = pfn_to_page(PFN_DOWN(base));
- ret = ion_heap_pages_zero(page, size, pgprot_writecombine(PAGE_KERNEL));
- if (ret)
- return ERR_PTR(ret);
-
- carveout_heap = kzalloc(sizeof(*carveout_heap), GFP_KERNEL);
- if (!carveout_heap)
- return ERR_PTR(-ENOMEM);
-
- carveout_heap->pool = gen_pool_create(PAGE_SHIFT, -1);
- if (!carveout_heap->pool) {
- kfree(carveout_heap);
- return ERR_PTR(-ENOMEM);
- }
- gen_pool_add(carveout_heap->pool, base, size, -1);
- carveout_heap->heap.ops = &carveout_heap_ops;
- carveout_heap->heap.type = ION_HEAP_TYPE_CARVEOUT;
- carveout_heap->heap.flags = ION_HEAP_FLAG_DEFER_FREE;
-
- return &carveout_heap->heap;
-}
--
2.19.1
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