Environment can be smaller than NAND block size, do not need to read a whole block and minimum for writing is one page. Also remove an unused variable.

Signed-off-by: Guennadi Liakhovetski lg@denx.de --- common/env_nand.c | 18 +++++++++--------- 1 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/common/env_nand.c b/common/env_nand.c index 104f085..2a80bef 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -159,22 +159,23 @@ int writeenv(size_t offset, u_char *buf) { size_t end = offset + CFG_ENV_RANGE; size_t amount_saved = 0; - size_t blocksize; + size_t blocksize, len;

u_char *char_ptr;

blocksize = nand_info[0].erasesize; + len = min(blocksize, CFG_ENV_RANGE);

while (amount_saved < CFG_ENV_SIZE && offset < end) { if (nand_block_isbad(&nand_info[0], offset)) { offset += blocksize; } else { char_ptr = &buf[amount_saved]; - if (nand_write(&nand_info[0], offset, &blocksize, + if (nand_write(&nand_info[0], offset, &len, char_ptr)) return 1; offset += blocksize; - amount_saved += blocksize; + amount_saved += len; } } if (amount_saved != CFG_ENV_SIZE) @@ -261,21 +262,22 @@ int readenv (size_t offset, u_char * buf) { size_t end = offset + CFG_ENV_RANGE; size_t amount_loaded = 0; - size_t blocksize; + size_t blocksize, len;

u_char *char_ptr;

blocksize = nand_info[0].erasesize; + len = min(blocksize, CFG_ENV_RANGE);

while (amount_loaded < CFG_ENV_SIZE && offset < end) { if (nand_block_isbad(&nand_info[0], offset)) { offset += blocksize; } else { char_ptr = &buf[amount_loaded]; - if (nand_read(&nand_info[0], offset, &blocksize, char_ptr)) + if (nand_read(&nand_info[0], offset, &len, char_ptr)) return 1; offset += blocksize; - amount_loaded += blocksize; + amount_loaded += len; } } if (amount_loaded != CFG_ENV_SIZE) @@ -345,12 +347,10 @@ void env_relocate_spec (void) void env_relocate_spec (void) { #if !defined(ENV_IS_EMBEDDED) - size_t total; int ret;

- total = CFG_ENV_SIZE; ret = readenv(CFG_ENV_OFFSET, (u_char *) env_ptr); - if (ret || total != CFG_ENV_SIZE) + if (ret) return use_default();

if (crc32(0, env_ptr->data, ENV_SIZE) != env_ptr->crc)