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lfs: correct alignment restriction on lookahead buffer

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The buffer need only be 32-bit aligned.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
This commit is contained in:
Peter A. Bigot
2019-07-30 20:01:51 -05:00
parent db054684a6
commit f85ff1d2f8
1 changed files with 2 additions and 2 deletions
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lfs.c
+2 -2
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@@ -3412,10 +3412,10 @@ static int lfs_init(lfs_t *lfs, const struct lfs_config *cfg) {
lfs_cache_zero(lfs, &lfs->rcache);
lfs_cache_zero(lfs, &lfs->pcache);
// setup lookahead, must be multiple of 64-bits
// setup lookahead, must be multiple of 64-bits, 32-bit aligned
LFS_ASSERT(lfs->cfg->lookahead_size > 0);
LFS_ASSERT(lfs->cfg->lookahead_size % 8 == 0 &&
(uintptr_t)lfs->cfg->lookahead_buffer % 8 == 0);
(uintptr_t)lfs->cfg->lookahead_buffer % 4 == 0);
if (lfs->cfg->lookahead_buffer) {
lfs->free.buffer = lfs->cfg->lookahead_buffer;
} else {