From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
To: Shannon Nelson <shannon.nelson@oracle.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 net-next 6/9] sunvnet: straighten up message event handling logic
Date: Wed, 08 Feb 2017 15:59:47 +0000 [thread overview]
Message-ID: <20170208155947.GE30741@oracle.com> (raw)
In-Reply-To: <1486505582-76823-7-git-send-email-shannon.nelson@oracle.com>
On (02/07/17 14:12), Shannon Nelson wrote:
> +
> + /* we don't expect any other bits */
> + BUG_ON(port->rx_event & ~(LDC_EVENT_DATA_READY |
> + LDC_EVENT_RESET |
> + LDC_EVENT_UP));
> +
> + /* RESET takes precedent over any other event */
> + if (port->rx_event & LDC_EVENT_RESET) {
:
> port->rx_event = 0;
> return 0;
> }
> + if (port->rx_event & LDC_EVENT_UP) {
> + vio_link_state_change(vio, LDC_EVENT_UP);
> + port->rx_event = 0;
> + return 0;
> + }
>
> err = 0;
> tx_wakeup = 0;
IIRC there were timing-related situations where you can get woken up with
both UP and DATA_READY, and if my reading of your patch is
correct, we would ignore the DATA_READY, and return, right?
--Sowmini
WARNING: multiple messages have this Message-ID (diff)
From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
To: Shannon Nelson <shannon.nelson@oracle.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 net-next 6/9] sunvnet: straighten up message event handling logic
Date: Wed, 8 Feb 2017 07:59:47 -0800 [thread overview]
Message-ID: <20170208155947.GE30741@oracle.com> (raw)
In-Reply-To: <1486505582-76823-7-git-send-email-shannon.nelson@oracle.com>
On (02/07/17 14:12), Shannon Nelson wrote:
> +
> + /* we don't expect any other bits */
> + BUG_ON(port->rx_event & ~(LDC_EVENT_DATA_READY |
> + LDC_EVENT_RESET |
> + LDC_EVENT_UP));
> +
> + /* RESET takes precedent over any other event */
> + if (port->rx_event & LDC_EVENT_RESET) {
:
> port->rx_event = 0;
> return 0;
> }
> + if (port->rx_event & LDC_EVENT_UP) {
> + vio_link_state_change(vio, LDC_EVENT_UP);
> + port->rx_event = 0;
> + return 0;
> + }
>
> err = 0;
> tx_wakeup = 0;
IIRC there were timing-related situations where you can get woken up with
both UP and DATA_READY, and if my reading of your patch is
correct, we would ignore the DATA_READY, and return, right?
--Sowmini
next prev parent reply other threads:[~2017-02-08 15:59 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-07 22:12 [PATCH v2 net-next 0/9] sunvnet driver updates Shannon Nelson
2017-02-07 22:12 ` Shannon Nelson
2017-02-07 22:12 ` [PATCH v2 net-next 1/9] sunvnet: make sunvnet common code dynamically loadable Shannon Nelson
2017-02-07 22:12 ` Shannon Nelson
2017-02-08 19:29 ` David Miller
2017-02-08 19:29 ` David Miller
2017-02-08 21:50 ` Shannon Nelson
2017-02-08 21:50 ` Shannon Nelson
2017-02-07 22:12 ` [PATCH v2 net-next 2/9] sunvnet: remove unused variable in maybe_tx_wakeup Shannon Nelson
2017-02-07 22:12 ` Shannon Nelson
2017-02-07 22:12 ` [PATCH v2 net-next 3/9] sunvnet: update version and version printing Shannon Nelson
2017-02-07 22:12 ` Shannon Nelson
2017-02-07 22:12 ` [PATCH v2 net-next 4/9] sunvnet: add driver stats for ethtool support Shannon Nelson
2017-02-07 22:12 ` Shannon Nelson
2017-02-07 22:12 ` [PATCH v2 net-next 5/9] sunvnet: add memory barrier before check for tx enable Shannon Nelson
2017-02-07 22:12 ` Shannon Nelson
2017-02-07 22:12 ` [PATCH v2 net-next 6/9] sunvnet: straighten up message event handling logic Shannon Nelson
2017-02-07 22:12 ` Shannon Nelson
2017-02-08 15:59 ` Sowmini Varadhan [this message]
2017-02-08 15:59 ` Sowmini Varadhan
2017-02-08 16:28 ` Shannon Nelson
2017-02-08 16:28 ` Shannon Nelson
2017-02-08 16:34 ` Sowmini Varadhan
2017-02-08 16:34 ` Sowmini Varadhan
2017-02-07 22:13 ` [PATCH v2 net-next 7/9] sunvnet: remove extra rcu_read_unlocks Shannon Nelson
2017-02-07 22:13 ` Shannon Nelson
2017-02-07 22:13 ` [PATCH v2 net-next 8/9] ldmvsw: update and simplify version string Shannon Nelson
2017-02-07 22:13 ` Shannon Nelson
2017-02-07 22:13 ` [PATCH v2 net-next 9/9] ldmvsw: disable tso and gso for bridge operations Shannon Nelson
2017-02-07 22:13 ` Shannon Nelson
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