diff options
Diffstat (limited to 'drivers/dfu')
| -rw-r--r-- | drivers/dfu/dfu.c | 46 |
1 files changed, 28 insertions, 18 deletions
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index dab5e70..1bf66d0 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -147,6 +147,19 @@ static int dfu_write_buffer_drain(struct dfu_entity *dfu) return ret; } +void dfu_write_transaction_cleanup(struct dfu_entity *dfu) +{ + /* clear everything */ + dfu_free_buf(); + dfu->crc = 0; + dfu->offset = 0; + dfu->i_blk_seq_num = 0; + dfu->i_buf_start = dfu_buf; + dfu->i_buf_end = dfu_buf; + dfu->i_buf = dfu->i_buf_start; + dfu->inited = 0; +} + int dfu_flush(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) { int ret = 0; @@ -162,23 +175,14 @@ int dfu_flush(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) printf("\nDFU complete %s: 0x%08x\n", dfu_hash_algo->name, dfu->crc); - /* clear everything */ - dfu_free_buf(); - dfu->crc = 0; - dfu->offset = 0; - dfu->i_blk_seq_num = 0; - dfu->i_buf_start = dfu_buf; - dfu->i_buf_end = dfu_buf; - dfu->i_buf = dfu->i_buf_start; - dfu->inited = 0; + dfu_write_transaction_cleanup(dfu); return ret; } int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) { - int ret = 0; - int tret; + int ret; debug("%s: name: %s buf: 0x%p size: 0x%x p_num: 0x%x offset: 0x%llx bufoffset: 0x%x\n", __func__, dfu->name, buf, size, blk_seq_num, dfu->offset, @@ -202,6 +206,7 @@ int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) if (dfu->i_blk_seq_num != blk_seq_num) { printf("%s: Wrong sequence number! [%d] [%d]\n", __func__, dfu->i_blk_seq_num, blk_seq_num); + dfu_write_transaction_cleanup(dfu); return -1; } @@ -223,15 +228,18 @@ int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) /* flush buffer if overflow */ if ((dfu->i_buf + size) > dfu->i_buf_end) { - tret = dfu_write_buffer_drain(dfu); - if (ret == 0) - ret = tret; + ret = dfu_write_buffer_drain(dfu); + if (ret) { + dfu_write_transaction_cleanup(dfu); + return ret; + } } /* we should be in buffer now (if not then size too large) */ if ((dfu->i_buf + size) > dfu->i_buf_end) { error("Buffer overflow! (0x%p + 0x%x > 0x%p)\n", dfu->i_buf, size, dfu->i_buf_end); + dfu_write_transaction_cleanup(dfu); return -1; } @@ -240,12 +248,14 @@ int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) /* if end or if buffer full flush */ if (size == 0 || (dfu->i_buf + size) > dfu->i_buf_end) { - tret = dfu_write_buffer_drain(dfu); - if (ret == 0) - ret = tret; + ret = dfu_write_buffer_drain(dfu); + if (ret) { + dfu_write_transaction_cleanup(dfu); + return ret; + } } - return ret; + return 0; } static int dfu_read_buffer_fill(struct dfu_entity *dfu, void *buf, int size) |