netdev - Re: [PATCH V4] bgmac: driver for GBit MAC core on BCMA bus

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Date:	Mon, 07 Jan 2013 19:40:11 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	zajec5@...il.com
Cc:	netdev@...r.kernel.org, romieu@...zoreil.com, joe@...ches.com
Subject: Re: [PATCH V4] bgmac: driver for GBit MAC core on BCMA bus

From: Rafa┅ Mi┅ecki <zajec5@...il.com>
Date: Sun,  6 Jan 2013 01:20:09 +0100

> V4: stop queue when ring is full

You're still not doing it right.

> +	if (free_slots == 1) { /* Should never happen (netif_stop_queue) */
> +		bgmac_err(bgmac, "TX after stopping queue!\n");
> +		return NETDEV_TX_BUSY;
> +	}

You need to call netif_stop_queue() in this code path too.

Look more carefully at the drivers we asked you to use as
a model, they all do this properly.
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