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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 5/5] macb: add timeout on send
Date: Tue, 6 Mar 2012 09:29:30 +0100	[thread overview]
Message-ID: <20120306082930.GE3852@pengutronix.de> (raw)
In-Reply-To: <1330712410-26479-5-git-send-email-plagnioj@jcrosoft.com>

On Fri, Mar 02, 2012 at 07:20:10PM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> This will ensure that we send an other packet only when the first one is send.
> 
> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> ---
>  drivers/net/macb.c |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/net/macb.c b/drivers/net/macb.c
> index 9b54afa..3835dba 100644
> --- a/drivers/net/macb.c
> +++ b/drivers/net/macb.c
> @@ -121,6 +121,11 @@ static int macb_send(struct eth_device *edev, void *packet,
>  	barrier();
>  	writel(MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART), macb->regs + MACB_NCR);
>  
> +	wait_on_timeout(100 * MSECOND,
> +		!(macb->tx_ring[0].ctrl & TXBUF_USED));

If you care for adding a timeout loop then you should also check
the return value.

Sascha

-- 
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  reply	other threads:[~2012-03-06  8:29 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-02 18:20 [PATCH 1/5] net: use net_alloc_packet to allocate packet Jean-Christophe PLAGNIOL-VILLARD
2012-03-02 18:20 ` [PATCH 2/5] net: introduce net_free_packet to free the packet Jean-Christophe PLAGNIOL-VILLARD
2012-03-02 18:20 ` [PATCH 3/5] net: allow the drivers to specify the tx buffer allocator Jean-Christophe PLAGNIOL-VILLARD
2012-03-02 18:20 ` [PATCH 4/5] macb: implement alloc_packet & free_packet Jean-Christophe PLAGNIOL-VILLARD
2012-03-04 12:08   ` Sascha Hauer
2012-03-05 17:55     ` Jean-Christophe PLAGNIOL-VILLARD
2012-03-02 18:20 ` [PATCH 5/5] macb: add timeout on send Jean-Christophe PLAGNIOL-VILLARD
2012-03-06  8:29   ` Sascha Hauer [this message]
2012-03-07  9:21     ` Jean-Christophe PLAGNIOL-VILLARD

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