[U-Boot] [PATCH 1/3] usb, dfu: extract flush code into seperate function

[Marek Vasut <marex@denx.de>]

On Wednesday, March 12, 2014 at 11:01:19 AM, Heiko Schocher wrote:
> move the flushing code into an extra function dfu_flush(),
> so it can be used from other code.
> 
> Signed-off-by: Heiko Schocher <hs@denx.de>
> Cc: Lukasz Majewski <l.majewski@samsung.com>
> Cc: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Marek Vasut <marex@denx.de>
> ---
>  drivers/dfu/dfu.c | 46 ++++++++++++++++++++++++++--------------------
>  include/dfu.h     |  1 +
>  2 files changed, 27 insertions(+), 20 deletions(-)
> 
> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
> index 56e69fd..193e047 100644
> --- a/drivers/dfu/dfu.c
> +++ b/drivers/dfu/dfu.c
> @@ -127,6 +127,31 @@ static int dfu_write_buffer_drain(struct dfu_entity
> *dfu) return ret;
>  }
> 
> +int dfu_flush(struct dfu_entity *dfu, void *buf, int size, int
> blk_seq_num) +{
> +	int ret = 0;
> +
> +	/* end? */

What does this comment mean ? I don't understand it ...

> +	if (size == 0) {

You can check this like so:

if (size)
  return;

code
code
code

This would cut down the indent, no ?

Please let's fix this when this popped up, either in separate patch or wrap it 
into this one.

> +		/* Now try and flush to the medium if needed. */
> +		if (dfu->flush_medium)
> +			ret = dfu->flush_medium(dfu);
> +		printf("\nDFU complete CRC32: 0x%08x\n", 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;
> +	}
> +	return ret;
> +}
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