[PATCH v1] scsi: tcmu: Switch to bitmap_zalloc()

[Andy Shevchenko]

Switch to bitmap_zalloc() to show clearly what we are allocating.
Besides that it returns pointer of bitmap type instead of opaque void *.

Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
 drivers/target/target_core_user.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/target/target_core_user.c 
b/drivers/target/target_core_user.c
index 5831e0eecea1..c726c029affe 100644
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -1663,7 +1663,7 @@ static void tcmu_dev_kref_release(struct kref *kref)
        WARN_ON(!all_expired);
 
        tcmu_blocks_release(&udev->data_blocks, 0, udev->dbi_max + 1);
-       kfree(udev->data_bitmap);
+       bitmap_free(udev->data_bitmap);
        mutex_unlock(&udev->cmdr_lock);
 
        call_rcu(&dev->rcu_head, tcmu_dev_call_rcu);
@@ -1870,9 +1870,7 @@ static int tcmu_configure_device(struct se_device *dev)
        info = &udev->uio_info;
 
        mutex_lock(&udev->cmdr_lock);
-       udev->data_bitmap = kcalloc(BITS_TO_LONGS(udev->max_blocks),
-                                   sizeof(unsigned long),
-                                   GFP_KERNEL);
+       udev->data_bitmap = bitmap_zalloc(udev->max_blocks, GFP_KERNEL);
        mutex_unlock(&udev->cmdr_lock);
        if (!udev->data_bitmap) {
                ret = -ENOMEM;
@@ -1959,7 +1957,7 @@ static int tcmu_configure_device(struct se_device *dev)
        vfree(udev->mb_addr);
        udev->mb_addr = NULL;
 err_vzalloc:
-       kfree(udev->data_bitmap);
+       bitmap_free(udev->data_bitmap);
        udev->data_bitmap = NULL;
 err_bitmap_alloc:
        kfree(info->name);
-- 
2.20.1