diff options
| author | Lukasz Majewski <lukma@denx.de> | 2018-11-23 17:36:19 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2018-12-14 17:59:08 +0100 |
| commit | 916fa097997a5e1b70768ce944de28e038d4bebf (patch) | |
| tree | b12672e9413e8a44117984d84416ba4c400356f3 /include/linux/bitmap.h | |
| parent | bb00a015d624f683c66c9e30341f93b678d03d2e (diff) | |
usb: composite: Move bitmap related operations to ./include/linux/bitmap.h
The BITMAP related operations can now be moved to ./include/linux/bitmap.h
file to mimic the Linux kernel directory tree.
This change also allows to remove the lin_gadget_compat.h header file
(which is a legacy code only for composite U-boot layer).
It was also possible to remove #includes from several USB gadget drivers.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Stefan Agner <stefan.agner@toradex.com>
Diffstat (limited to 'include/linux/bitmap.h')
| -rw-r--r-- | include/linux/bitmap.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h new file mode 100644 index 0000000000..4a54ae0509 --- /dev/null +++ b/include/linux/bitmap.h @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0+ +#ifndef __LINUX_BITMAP_H +#define __LINUX_BITMAP_H + +#include <asm/types.h> +#include <linux/types.h> +#include <linux/bitops.h> + +#define small_const_nbits(nbits) \ + (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) + +static inline void bitmap_zero(unsigned long *dst, int nbits) +{ + if (small_const_nbits(nbits)) { + *dst = 0UL; + } else { + int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); + + memset(dst, 0, len); + } +} + +#endif /* __LINUX_BITMAP_H */ |