irqchip/alpine-msi: Switch to bitmap_zalloc()

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.shevchenko@linux.intel.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210618151657.65305-2-andriy.shevchenko@linux.intel.com

diff --git a/drivers/irqchip/irq-alpine-msi.c b/drivers/irqchip/irq-alpine-msi.c
index ede02dc..5ddb8e5 100644 (file)
--- a/drivers/irqchip/irq-alpine-msi.c
+++ b/drivers/irqchip/irq-alpine-msi.c
@@ -267,9 +267,7 @@ static int alpine_msix_init(struct device_node *node,
                goto err_priv;
        }
 
-       priv->msi_map = kcalloc(BITS_TO_LONGS(priv->num_spis),
-                               sizeof(*priv->msi_map),
-                               GFP_KERNEL);
+       priv->msi_map = bitmap_zalloc(priv->num_spis, GFP_KERNEL);
        if (!priv->msi_map) {
                ret = -ENOMEM;
                goto err_priv;
@@ -285,7 +283,7 @@ static int alpine_msix_init(struct device_node *node,
        return 0;
 
 err_map:
-       kfree(priv->msi_map);
+       bitmap_free(priv->msi_map);
 err_priv:
        kfree(priv);
        return ret;