atm: he: Use the bitmap API to allocate bitmaps

Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.

It is less verbose and it improves the semantic.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/7f795bd6d5b2a00f581175b7069b229c2e5a4192.1657379127.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/atm/he.c b/drivers/atm/he.c
index 17f44ab..ad91cc6 100644 (file)
--- a/drivers/atm/he.c
+++ b/drivers/atm/he.c
@@ -780,14 +780,11 @@ static int he_init_group(struct he_dev *he_dev, int group)
                  G0_RBPS_BS + (group * 32));
 
        /* bitmap table */
-       he_dev->rbpl_table = kmalloc_array(BITS_TO_LONGS(RBPL_TABLE_SIZE),
-                                          sizeof(*he_dev->rbpl_table),
-                                          GFP_KERNEL);
+       he_dev->rbpl_table = bitmap_zalloc(RBPL_TABLE_SIZE, GFP_KERNEL);
        if (!he_dev->rbpl_table) {
                hprintk("unable to allocate rbpl bitmap table\n");
                return -ENOMEM;
        }
-       bitmap_zero(he_dev->rbpl_table, RBPL_TABLE_SIZE);
 
        /* rbpl_virt 64-bit pointers */
        he_dev->rbpl_virt = kmalloc_array(RBPL_TABLE_SIZE,
@@ -902,7 +899,7 @@ out_destroy_rbpl_pool:
 out_free_rbpl_virt:
        kfree(he_dev->rbpl_virt);
 out_free_rbpl_table:
-       kfree(he_dev->rbpl_table);
+       bitmap_free(he_dev->rbpl_table);
 
        return -ENOMEM;
 }
@@ -1578,7 +1575,7 @@ he_stop(struct he_dev *he_dev)
        }
 
        kfree(he_dev->rbpl_virt);
-       kfree(he_dev->rbpl_table);
+       bitmap_free(he_dev->rbpl_table);
        dma_pool_destroy(he_dev->rbpl_pool);
 
        if (he_dev->rbrq_base)