[PATCH v1] USB: wusbcore: 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/usb/wusbcore/wa-rpipe.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/wusbcore/wa-rpipe.c b/drivers/usb/wusbcore/wa-rpipe.c
index 38884aac862b..a5734cbcd5ad 100644
--- a/drivers/usb/wusbcore/wa-rpipe.c
+++ b/drivers/usb/wusbcore/wa-rpipe.c
@@ -470,9 +470,7 @@ int rpipe_get_by_ep(struct wahc *wa, struct 
usb_host_endpoint *ep,
 int wa_rpipes_create(struct wahc *wa)
 {
        wa->rpipes = le16_to_cpu(wa->wa_descr->wNumRPipes);
-       wa->rpipe_bm = kcalloc(BITS_TO_LONGS(wa->rpipes),
-                              sizeof(unsigned long),
-                              GFP_KERNEL);
+       wa->rpipe_bm = bitmap_zalloc(wa->rpipes, GFP_KERNEL);
        if (wa->rpipe_bm == NULL)
                return -ENOMEM;
        return 0;
@@ -487,7 +485,7 @@ void wa_rpipes_destroy(struct wahc *wa)
                dev_err(dev, "BUG: pipes not released on exit: %*pb\n",
                        wa->rpipes, wa->rpipe_bm);
        }
-       kfree(wa->rpipe_bm);
+       bitmap_free(wa->rpipe_bm);
 }
 
 /*
-- 
2.18.0