From: Simon Glass <simon.glass@canonical.com> Add get_random_u32_below() and prandom_u32_max() stub macros to linux/random.h for filesystem code that uses random number generation. Update ext4_uboot.h to use linux/random.h instead of duplicating these definitions. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com> --- fs/ext4l/ext4_uboot.h | 8 +++----- include/linux/random.h | 25 ++++++++++++++++++++++++- 2 files changed, 27 insertions(+), 6 deletions(-) diff --git a/fs/ext4l/ext4_uboot.h b/fs/ext4l/ext4_uboot.h index 3c6b3ca5507..4fb8f9111b0 100644 --- a/fs/ext4l/ext4_uboot.h +++ b/fs/ext4l/ext4_uboot.h @@ -252,8 +252,8 @@ struct buffer_head *sb_getblk(struct super_block *sb, sector_t block); /* d_inode is now in linux/dcache.h */ -/* Random number functions */ -#define get_random_u32_below(max) (0) +/* Random number functions - use linux/random.h */ +#include <linux/random.h> /* Buffer cache operations */ #define sb_find_get_block(sb, block) ((struct buffer_head *)NULL) @@ -1267,9 +1267,7 @@ int ext4_fill_super(struct super_block *sb, struct fs_context *fc); int ext4_commit_super(struct super_block *sb); void ext4_unregister_li_request(struct super_block *sb); -/* prandom */ -#define get_random_u32() 0 -#define prandom_u32_max(max) 0 +/* prandom - get_random_u32, prandom_u32_max are in linux/random.h */ /* ctype */ #include <linux/ctype.h> diff --git a/include/linux/random.h b/include/linux/random.h index cb09c6c6b05..1a9de842a4c 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -1,6 +1,9 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Stub definitions for random number generation. + * Random number generation definitions for U-Boot + * + * Based on Linux random.h - random number generation. + * U-Boot stub - returns constant values. */ #ifndef _LINUX_RANDOM_H #define _LINUX_RANDOM_H @@ -12,4 +15,24 @@ #define get_random_u32() 0 #define get_random_u64() 0ULL +/** + * get_random_u32_below() - get random number below a ceiling + * @ceil: upper bound (exclusive) + * + * U-Boot stub - always returns 0. + * + * Return: random value in [0, ceil) + */ +#define get_random_u32_below(ceil) (0) + +/** + * prandom_u32_max() - get random number up to a maximum + * @max: upper bound (inclusive) + * + * U-Boot stub - always returns 0. + * + * Return: random value in [0, max] + */ +#define prandom_u32_max(max) (0) + #endif /* _LINUX_RANDOM_H */ -- 2.43.0