[PATCH v3 00/10] net/macb: driver enhancement concerning GEM support, ring logic and cleanup · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 01/10] net/macb: Add support for Gigabit Ethernet mode · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 02/10] net/macb: memory barriers cleanup · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 03/10] net/macb: change debugging messages · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 04/10] net/macb: remove macb_get_drvinfo() · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 05/10] net/macb: tx status is more than 8 bits now · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 06/10] net/macb: clean up ring buffer logic · Nicolas Ferre <hidden> · 2012-10-30
RE: [PATCH v3 06/10] net/macb: clean up ring buffer logic · David Laight <hidden> · 2012-10-30
Re: [PATCH v3 06/10] net/macb: clean up ring buffer logic · Håvard Skinnemoen <hidden> · 2012-10-30
Re: [PATCH v3 06/10] net/macb: clean up ring buffer logic · Nicolas Ferre <hidden> · 2012-10-31
Re: [PATCH v3 06/10] net/macb: clean up ring buffer logic · Nicolas Ferre <hidden> · 2012-10-31
RE: [PATCH v3 06/10] net/macb: clean up ring buffer logic · David Laight <hidden> · 2012-10-31
RE: [PATCH v3 06/10] net/macb: clean up ring buffer logic · David Laight <hidden> · 2012-10-31
[PATCH] net/at91_ether: fix the use of macb structure · Nicolas Ferre <hidden> · 2012-10-30
Re: [PATCH] net/at91_ether: fix the use of macb structure · David Miller <davem@davemloft.net> · 2012-11-03
Re: [PATCH] net/at91_ether: fix the use of macb structure · Nicolas Ferre <hidden> · 2012-11-04
[PATCH v3 07/10] net/macb: ethtool interface: add register dump feature · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 08/10] net/macb: better manage tx errors · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 09/10] net/macb: Offset first RX buffer by two bytes · Nicolas Ferre <hidden> · 2012-10-30
[PATCH v3 10/10] net/macb: add pinctrl consumer support · Nicolas Ferre <hidden> · 2012-10-30
Re: [PATCH v3 10/10] net/macb: add pinctrl consumer support · Joachim Eastwood <hidden> · 2012-10-30
Re: [PATCH v3 10/10] net/macb: add pinctrl consumer support · Nicolas Ferre <hidden> · 2012-10-31
Re: [PATCH v3 00/10] net/macb: driver enhancement concerning GEM support, ring logic and cleanup · Nicolas Ferre <hidden> · 2012-10-30
Re: [PATCH v3 00/10] net/macb: driver enhancement concerning GEM support, ring logic and cleanup · Joachim Eastwood <hidden> · 2012-10-30

RE: [PATCH v3 06/10] net/macb: clean up ring buffer logic

From: David Laight <hidden>
Date: 2012-10-31 09:57:44
Also in: linux-arm-kernel, lkml

	return (TX_RING_SIZE - (bp->tx_head - bp->tx_tail) & (TX_RING_SIZE - 1));

Is equivalent to:

	return (bp->tx_tail - bp->tx_head) & (TX_RING_SIZE - 1));

	David

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