Jerome Pouiller <jerome.pouil...@silabs.com> writes:
> +/* NOTE: wfx_send_pds() destroy buf */
> +int wfx_send_pds(struct wfx_dev *wdev, u8 *buf, size_t len)
> +{
> + int ret;
> + int start, brace_level, i;
> +
> + start = 0;
> + brace_level = 0;
> + if (buf[0] != '{') {
> + dev_err(wdev->dev, "valid PDS start with '{'. Did you forget to
> compress it?\n");
> + return -EINVAL;
> + }
> + for (i = 1; i < len - 1; i++) {
> + if (buf[i] == '{')
> + brace_level++;
> + if (buf[i] == '}')
> + brace_level--;
> + if (buf[i] == '}' && !brace_level) {
> + i++;
> + if (i - start + 1 > WFX_PDS_MAX_SIZE)
> + return -EFBIG;
> + buf[start] = '{';
> + buf[i] = 0;
> + dev_dbg(wdev->dev, "send PDS '%s}'\n", buf + start);
> + buf[i] = '}';
> + ret = hif_configuration(wdev, buf + start,
> + i - start + 1);
> + if (ret > 0) {
> + dev_err(wdev->dev, "PDS bytes %d to %d: invalid data (unsupported
> options?)\n",
> + start, i);
> + return -EINVAL;
> + }
> + if (ret == -ETIMEDOUT) {
> + dev_err(wdev->dev, "PDS bytes %d to %d: chip didn't reply (corrupted
> file?)\n",
> + start, i);
> + return ret;
> + }
> + if (ret) {
> + dev_err(wdev->dev, "PDS bytes %d to %d: chip returned an unknown
> error\n",
> + start, i);
> + return -EIO;
> + }
> + buf[i] = ',';
> + start = i;
> + }
> + }
> + return 0;
> +}
What does this function do? Looks very strange.
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