netdev - Re: [PATCH net-next 4/4] r8152: support firmware files

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Message-ID: <CAN_we7P2LDvR8miAsoSeL6+iEOK+ucgjRDC8jtPbc4_-2nn7MQ@mail.gmail.com>
Date:	Wed, 20 Aug 2014 14:01:07 +0200
From:	Daniele Forsi <dforsi@...il.com>
To:	Hayes Wang <hayeswang@...ltek.com>
Cc:	netdev@...r.kernel.org, nic_swsd@...ltek.com,
	linux-kernel@...r.kernel.org, USB list <linux-usb@...r.kernel.org>
Subject: Re: [PATCH net-next 4/4] r8152: support firmware files

2014-08-20 10:58 GMT+02:00 Hayes Wang:

> The firmware file is composed of the fw header and the commands. Each
> command has the following type.
>
>         cmd(2 bytes) + length(2 bytes) + data(variable bytes)

> +static bool rtl_fw_format_ok(struct rtl_fw *rtl_fw)

> +       start = le32_to_cpu(fw_header->fw_start);
> +       if (start > fw->size)
> +               goto out;

since "start" is an offset in an array of size "fw->size" this should
check for ">=" and if a command is at least cmd(2 bytes) + length(2
bytes), shouldn't this check for "start >= fw->size - 4"?

-- 
Daniele Forsi
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