gpu: host1x: 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.

While at it, remove a useless bitmap_zero() call. The bitmap is already
zero'ed when allocated.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/host1x/channel.c b/drivers/gpu/host1x/channel.c
index 2a9a3a8..2d0051d 100644 (file)
--- a/drivers/gpu/host1x/channel.c
+++ b/drivers/gpu/host1x/channel.c
@@ -21,22 +21,18 @@ int host1x_channel_list_init(struct host1x_channel_list *chlist,
        if (!chlist->channels)
                return -ENOMEM;
 
-       chlist->allocated_channels =
-               kcalloc(BITS_TO_LONGS(num_channels), sizeof(unsigned long),
-                       GFP_KERNEL);
+       chlist->allocated_channels = bitmap_zalloc(num_channels, GFP_KERNEL);
        if (!chlist->allocated_channels) {
                kfree(chlist->channels);
                return -ENOMEM;
        }
 
-       bitmap_zero(chlist->allocated_channels, num_channels);
-
        return 0;
 }
 
 void host1x_channel_list_free(struct host1x_channel_list *chlist)
 {
-       kfree(chlist->allocated_channels);
+       bitmap_free(chlist->allocated_channels);
        kfree(chlist->channels);
 }