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extmod/vfs_lfs: Fix lfs cache_size calculation. 

The calculation of the lfs2 cache_size was incorrect, the maximum allowed
size is block_size.

The cache size must be: "a multiple of the read and program sizes, and a
factor of the block size".

Signed-off-by: Peter Züger <zueger.peter@icloud.com>
This commit is contained in:
Peter Züger 2023-12-21 00:17:15 +01:00 committed by Damien George
parent 3bca93b2d0
commit ce42c9ee16
1 changed files with 1 additions and 1 deletions
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extmod/vfs_lfsx.c
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@ -99,7 +99,7 @@ STATIC void MP_VFS_LFSx(init_config)(MP_OBJ_VFS_LFSx * self, mp_obj_t bdev, size
config->lookahead_buffer = m_new(uint8_t, config->lookahead / 8);
#else
config->block_cycles = 100;
config->cache_size = 4 * MAX(read_size, prog_size);
config->cache_size = MIN(config->block_size, (4 * MAX(read_size, prog_size)));
config->lookahead_size = lookahead;
config->read_buffer = m_new(uint8_t, config->cache_size);
config->prog_buffer = m_new(uint8_t, config->cache_size);