[PATCH v1] net-sysfs: 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>
---
 net/core/net-sysfs.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 7c5061123ead..76161503527b 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -1336,8 +1336,7 @@ static ssize_t xps_rxqs_show(struct netdev_queue *queue, 
char *buf)
                if (tc < 0)
                        return -EINVAL;
        }
-       mask = kcalloc(BITS_TO_LONGS(dev->num_rx_queues), sizeof(long),
-                      GFP_KERNEL);
+       mask = bitmap_zalloc(dev->num_rx_queues, GFP_KERNEL);
        if (!mask)
                return -ENOMEM;
 
@@ -1366,7 +1365,7 @@ static ssize_t xps_rxqs_show(struct netdev_queue *queue, 
char *buf)
        rcu_read_unlock();
 
        len = bitmap_print_to_pagebuf(false, buf, mask, dev->num_rx_queues);
-       kfree(mask);
+       bitmap_free(mask);
 
        return len < PAGE_SIZE ? len : -EINVAL;
 }
@@ -1382,8 +1381,7 @@ static ssize_t xps_rxqs_store(struct netdev_queue *queue, 
const char *buf,
        if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
                return -EPERM;
 
-       mask = kcalloc(BITS_TO_LONGS(dev->num_rx_queues), sizeof(long),
-                      GFP_KERNEL);
+       mask = bitmap_zalloc(dev->num_rx_queues, GFP_KERNEL);
        if (!mask)
                return -ENOMEM;
 
@@ -1391,7 +1389,7 @@ static ssize_t xps_rxqs_store(struct netdev_queue *queue, 
const char *buf,
 
        err = bitmap_parse(buf, len, mask, dev->num_rx_queues);
        if (err) {
-               kfree(mask);
+               bitmap_free(mask);
                return err;
        }
 
@@ -1399,7 +1397,7 @@ static ssize_t xps_rxqs_store(struct netdev_queue *queue, 
const char *buf,
        err = __netif_set_xps_queue(dev, mask, index, true);
        cpus_read_unlock();
 
-       kfree(mask);
+       bitmap_free(mask);
        return err ? : len;
 }
 
-- 
2.20.1