netdev - Re: [PATCH 3/3] net: hisilicon: new hip04 ethernet driver

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Date:	Mon, 07 Apr 2014 14:56:05 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	zhangfei.gao@...aro.org
Cc:	linux@....linux.org.uk, arnd@...db.de, f.fainelli@...il.com,
	sergei.shtylyov@...entembedded.com, mark.rutland@....com,
	David.Laight@...LAB.COM, eric.dumazet@...il.com,
	linux-arm-kernel@...ts.infradead.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org
Subject: Re: [PATCH 3/3] net: hisilicon: new hip04 ethernet driver

From: Zhangfei Gao <zhangfei.gao@...aro.org>
Date: Sat,  5 Apr 2014 12:35:06 +0800

> +#define DESC_DEF_CFG			0x14

You absolutely cannot do this.

You must document what the bits in the TX descriptor config field
mean, all of them.

I bet there is a bit in there somewhere which tells the chip to signal
an interrupt when the packet has been sent.

But since you haven't documented the descriptor fields properly with
a full set of macro defines, we can't know what bit that is.

I really am very disappointed in the quality of this driver, and you
can expect that there will be a lot of push back and requests for
changes before this driver will be even close to being ready for
inclusion.
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