Merge "msm: mdss: fix possible overflow errors in panel_debug_base_reg_read"

	mdss_dsi_panel_cmd_read(ctrl_pdata, panel_reg[0], panel_reg[1],

				NULL, rx_buf, dbg->cnt);

	len = snprintf(panel_reg_buf, reg_buf_len, "0x%02zx: ", dbg->off);

	if (len < 0)

		goto read_reg_fail;

	len = scnprintf(panel_reg_buf, reg_buf_len, "0x%02zx: ", dbg->off);

	for (i = 0; (len < reg_buf_len) && (i < ctrl_pdata->rx_len); i++)

		len += scnprintf(panel_reg_buf + len, reg_buf_len - len,

				"0x%02x ", rx_buf[i]);

	if (len)

		panel_reg_buf[len - 1] = '\n';

	if (mdata->debug_inf.debug_enable_clock)

		mdata->debug_inf.debug_enable_clock(0);

	if (len < 0 || len >= sizeof(panel_reg_buf))

		return 0;

	if ((count < sizeof(panel_reg_buf))

	if ((count < reg_buf_len)

			|| (copy_to_user(user_buf, panel_reg_buf, len)))

		goto read_reg_fail;