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path: root/drivers/dfu/dfu.c
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Diffstat (limited to 'drivers/dfu/dfu.c')
-rw-r--r--drivers/dfu/dfu.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 4a8804e4b7..1eb92e5417 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -229,6 +229,7 @@ static int dfu_read_buffer_fill(struct dfu_entity *dfu, void *buf, int size)
dfu->crc = crc32(dfu->crc, buf, chunk);
dfu->i_buf += chunk;
dfu->b_left -= chunk;
+ dfu->r_left -= chunk;
size -= chunk;
buf += chunk;
readn += chunk;
@@ -287,7 +288,7 @@ int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num)
dfu->offset = 0;
dfu->i_buf_end = dfu_get_buf() + dfu_buf_size;
dfu->i_buf = dfu->i_buf_start;
- dfu->b_left = 0;
+ dfu->b_left = min(dfu_buf_size, dfu->r_left);
dfu->bad_skip = 0;
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