Merge tag 'driver-core-5.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-microblaze.git] / lib / bitmap.c

diff --git a/lib/bitmap.c b/lib/bitmap.c
index 9f4626a..74ceb02 100644 (file)
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -3,17 +3,19 @@
  * lib/bitmap.c
  * Helper functions for bitmap.h.
  */
-#include <linux/export.h>
-#include <linux/thread_info.h>
-#include <linux/ctype.h>
-#include <linux/errno.h>
+
 #include <linux/bitmap.h>
 #include <linux/bitops.h>
 #include <linux/bug.h>
+#include <linux/ctype.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/thread_info.h>
 #include <linux/uaccess.h>
 
 #include <asm/page.h>
@@ -1271,6 +1273,38 @@ void bitmap_free(const unsigned long *bitmap)
 }
 EXPORT_SYMBOL(bitmap_free);
 
+static void devm_bitmap_free(void *data)
+{
+       unsigned long *bitmap = data;
+
+       bitmap_free(bitmap);
+}
+
+unsigned long *devm_bitmap_alloc(struct device *dev,
+                                unsigned int nbits, gfp_t flags)
+{
+       unsigned long *bitmap;
+       int ret;
+
+       bitmap = bitmap_alloc(nbits, flags);
+       if (!bitmap)
+               return NULL;
+
+       ret = devm_add_action_or_reset(dev, devm_bitmap_free, bitmap);
+       if (ret)
+               return NULL;
+
+       return bitmap;
+}
+EXPORT_SYMBOL_GPL(devm_bitmap_alloc);
+
+unsigned long *devm_bitmap_zalloc(struct device *dev,
+                                 unsigned int nbits, gfp_t flags)
+{
+       return devm_bitmap_alloc(dev, nbits, flags | __GFP_ZERO);
+}
+EXPORT_SYMBOL_GPL(devm_bitmap_zalloc);
+
 #if BITS_PER_LONG == 64
 /**
  * bitmap_from_arr32 - copy the contents of u32 array of bits to bitmap