[tip: irq/core] bitmap: Define a cleanup function for bitmaps

[tip-bot2 for Bartosz Golaszewski]

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     d12a82848eac28d248e67940378fe4a72b0a8cd3
Gitweb:        https://git.kernel.org/tip/d12a82848eac28d248e67940378fe4a72b0a8cd3
Author:        Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
AuthorDate:    Mon, 22 Jan 2024 13:42:40 +01:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Fri, 26 Jan 2024 13:44:48 +01:00

bitmap: Define a cleanup function for bitmaps

Add support for autopointers for bitmaps allocated with bitmap_alloc()
et al.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Acked-by: Yury Norov <yury.norov@xxxxxxxxx>
Link: https://lore.kernel.org/r/20240122124243.44002-2-brgl@xxxxxxxx

---
 include/linux/bitmap.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h
index 9945143..df24c8f 100644
--- a/include/linux/bitmap.h
+++ b/include/linux/bitmap.h
@@ -6,6 +6,7 @@
 
 #include <linux/align.h>
 #include <linux/bitops.h>
+#include <linux/cleanup.h>
 #include <linux/errno.h>
 #include <linux/find.h>
 #include <linux/limits.h>
@@ -127,6 +128,8 @@ unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node);
 unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node);
 void bitmap_free(const unsigned long *bitmap);
 
+DEFINE_FREE(bitmap, unsigned long *, if (_T) bitmap_free(_T))
+
 /* Managed variants of the above. */
 unsigned long *devm_bitmap_alloc(struct device *dev,
 				 unsigned int nbits, gfp_t flags);