For the first eMMC read of data for upload, use the "large" dfu_buf (now configurable) instead of usb request buffer allocated at composite layer (which is 4KiB) [*].
For eMMC the whole file is read, which usually is larger than the buffer [*] provided with usb request.
Signed-off-by: Lukasz Majewski l.majewski@samsung.com Cc: Tom Rini trini@ti.com Cc: Pantelis Antoniou panto@antoniou-consulting.com Cc: Marek Vasut marex@denx.de Cc: Heiko Schocher hs@denx.de --- drivers/dfu/dfu.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index e429d74..0521752 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -248,7 +248,11 @@ int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) __func__, dfu->name, buf, size, blk_seq_num, dfu->i_buf);
if (!dfu->inited) { - ret = dfu->read_medium(dfu, 0, buf, &dfu->r_left); + dfu->i_buf_start = dfu_get_buf(); + if (dfu->i_buf_start == NULL) + return -ENOMEM; + + ret = dfu->read_medium(dfu, 0, dfu->i_buf_start, &dfu->r_left); if (ret != 0) { debug("%s: failed to get r_left\n", __func__); return ret; @@ -259,9 +263,6 @@ int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) dfu->i_blk_seq_num = 0; dfu->crc = 0; dfu->offset = 0; - dfu->i_buf_start = dfu_get_buf(); - if (dfu->i_buf_start == NULL) - return -ENOMEM; dfu->i_buf_end = dfu_get_buf() + dfu_buf_size; dfu->i_buf = dfu->i_buf_start; dfu->b_left = 0;