staging: gasket: use vzalloc instead of vmalloc/memset

Use vzalloc instead of vmalloc followed by memset with 0.

Signed-off-by: Ivan Bornyakov <brnkv.i1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c
index 4f2ff77..55ab593 100644 (file)
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -330,7 +330,7 @@ int gasket_page_table_init(
        pg_tbl = *ppg_tbl;
        bytes = total_entries * sizeof(struct gasket_page_table_entry);
        if (bytes != 0) {
-               pg_tbl->entries = vmalloc(bytes);
+               pg_tbl->entries = vzalloc(bytes);
                if (!pg_tbl->entries) {
                        gasket_nodev_debug(
                                "No memory for address translation metadata.");
@@ -338,7 +338,6 @@ int gasket_page_table_init(
                        *ppg_tbl = NULL;
                        return -ENOMEM;
                }
-               memset(pg_tbl->entries, 0, bytes);
        }
 
        mutex_init(&pg_tbl->mutex);
@@ -1054,13 +1053,12 @@ static int gasket_alloc_extended_subtable(
 
        subtable_bytes = sizeof(struct gasket_page_table_entry) *
                GASKET_PAGES_PER_SUBTABLE;
-       pte->sublevel = vmalloc(subtable_bytes);
+       pte->sublevel = vzalloc(subtable_bytes);
        if (!pte->sublevel) {
                free_page(page_addr);
                memset(pte, 0, sizeof(struct gasket_page_table_entry));
                return -ENOMEM;
        }
-       memset(pte->sublevel, 0, subtable_bytes);
 
        /* Map the page into DMA space. */
        if (pg_tbl->dma_ops) {