From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [patch 05/10] [TULIP] Defer tulip_select_media() to process
	context
Date: Sat, 26 Aug 2006 17:44:26 +0100
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Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Kyle McMartin <kyle@parisc-linux.org>,
	Jeff Garzik <jeff@garzik.org>
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To: Valerie Henson <val_henson@linux.intel.com>
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Ar Gwe, 2006-08-25 am 17:02 -0700, ysgrifennodd Valerie Henson:
> +static inline void tulip_tx_timeout_complete(struct tulip_private *tp, void __iomem *ioaddr)
> +{
> +	/* Stop and restart the chip's Tx processes. */
> +	tulip_restart_rxtx(tp);
> +	/* Trigger an immediate transmit demand. */
> +	iowrite32(0, ioaddr + CSR1);

In mmio mode it will only be "immediate" if the caller is guaranteed to
read from the device and flush the iowrite ....