[PATCH] staging: gasket: Fix sparse "incorrect type in assignment" warnings.

[Laurence Rochfort]

Silence the below sparse warnings by casting betwen u8 __iomem *, and
void *.

warning: incorrect type in assignment (different address spaces)
   expected unsigned char [noderef] [usertype] <asn:2>*virt_base
   got void *[assigned] mem
warning: incorrect type in argument 3 (different address spaces)
   expected void *cpu_addr
   got unsigned char [noderef] [usertype] <asn:2>*virt_base

Signed-off-by: Laurence Rochfort <laurence.rochf...@gmail.com>
---
 drivers/staging/gasket/gasket_page_table.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/gasket/gasket_page_table.c 
b/drivers/staging/gasket/gasket_page_table.c
index d4c5f8a..7f5e5b3 100644
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -1278,7 +1278,7 @@ int gasket_alloc_coherent_memory(struct gasket_dev 
*gasket_dev, u64 size,
                                 dma_addr_t *dma_address, u64 index)
 {
        dma_addr_t handle;
-       void *mem;
+       u8 __iomem *mem;
        int j;
        unsigned int num_pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
        const struct gasket_driver_desc *driver_desc =
@@ -1290,7 +1290,7 @@ int gasket_alloc_coherent_memory(struct gasket_dev 
*gasket_dev, u64 size,
        if (num_pages == 0)
                return -EINVAL;
 
-       mem = dma_alloc_coherent(gasket_get_device(gasket_dev),
+       mem = (u8 __iomem *)dma_alloc_coherent(gasket_get_device(gasket_dev),
                                 num_pages * PAGE_SIZE, &handle, 0);
        if (!mem)
                goto nomem;
@@ -1325,7 +1325,7 @@ int gasket_alloc_coherent_memory(struct gasket_dev 
*gasket_dev, u64 size,
 nomem:
        if (mem) {
                dma_free_coherent(gasket_get_device(gasket_dev),
-                                 num_pages * PAGE_SIZE, mem, handle);
+                                 num_pages * PAGE_SIZE, (void __force *)mem, 
handle);
        }
 
        if (gasket_dev->page_table[index]->coherent_pages) {
@@ -1353,7 +1353,7 @@ int gasket_free_coherent_memory(struct gasket_dev 
*gasket_dev, u64 size,
        if (gasket_dev->coherent_buffer.length_bytes) {
                dma_free_coherent(gasket_get_device(gasket_dev),
                                  gasket_dev->coherent_buffer.length_bytes,
-                                 gasket_dev->coherent_buffer.virt_base,
+                                 (void __force 
*)gasket_dev->coherent_buffer.virt_base,
                                  gasket_dev->coherent_buffer.phys_base);
                gasket_dev->coherent_buffer.length_bytes = 0;
                gasket_dev->coherent_buffer.virt_base = NULL;
@@ -1372,7 +1372,7 @@ void gasket_free_coherent_memory_all(
        if (gasket_dev->coherent_buffer.length_bytes) {
                dma_free_coherent(gasket_get_device(gasket_dev),
                                  gasket_dev->coherent_buffer.length_bytes,
-                                 gasket_dev->coherent_buffer.virt_base,
+                                 (void __force 
*)gasket_dev->coherent_buffer.virt_base,
                                  gasket_dev->coherent_buffer.phys_base);
                gasket_dev->coherent_buffer.length_bytes = 0;
                gasket_dev->coherent_buffer.virt_base = NULL;
-- 
2.9.5