linux-kernel - Re: [PATCH v4 1/5] net: macb: fix wakeup test in runtime suspend/resume routines

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Date:   Thu, 7 May 2020 12:03:04 +0200
From:   Nicolas Ferre <nicolas.ferre@...rochip.com>
To:     Jakub Kicinski <kuba@...nel.org>, <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        <harini.katakam@...inx.com>, <linux-kernel@...r.kernel.org>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        <antoine.tenart@...tlin.com>, <f.fainelli@...il.com>
Subject: Re: [PATCH v4 1/5] net: macb: fix wakeup test in runtime
 suspend/resume routines

On 06/05/2020 at 22:18, Jakub Kicinski wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> On Wed, 6 May 2020 13:37:37 +0200 nicolas.ferre@...rochip.com wrote:
>> From: Nicolas Ferre <nicolas.ferre@...rochip.com>
>>
>> Use the proper struct device pointer to check if the wakeup flag
>> and wakeup source are positioned.
>> Use the one passed by function call which is equivalent to
>> &bp->dev->dev.parent.
>>
>> It's preventing the trigger of a spurious interrupt in case the
>> Wake-on-Lan feature is used.
>>
>> Fixes: bc1109d04c39 ("net: macb: Add pm runtime support")
> 
>          Fixes tag: Fixes: bc1109d04c39 ("net: macb: Add pm runtime support")
>          Has these problem(s):
>                  - Target SHA1 does not exist

Indeed, it's:
Fixes: d54f89af6cc4 ("net: macb: Add pm runtime support")

David: do I have to respin or you can modify it?

Thanks. Regards,
   Nicolas
>> Signed-off-by: Nicolas Ferre <nicolas.ferre@...rochip.com>
>> Reviewed-by: Florian Fainelli <f.fainelli@...il.com>
>> Cc: Claudiu Beznea <claudiu.beznea@...rochip.com>
>> Cc: Harini Katakam <harini.katakam@...inx.com>
>> ---
>>   drivers/net/ethernet/cadence/macb_main.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
>> index 36290a8e2a84..d11fae37d46b 100644
>> --- a/drivers/net/ethernet/cadence/macb_main.c
>> +++ b/drivers/net/ethernet/cadence/macb_main.c
>> @@ -4616,7 +4616,7 @@ static int __maybe_unused macb_runtime_suspend(struct device *dev)
>>        struct net_device *netdev = dev_get_drvdata(dev);
>>        struct macb *bp = netdev_priv(netdev);
>>
>> -     if (!(device_may_wakeup(&bp->dev->dev))) {
>> +     if (!(device_may_wakeup(dev))) {
>>                clk_disable_unprepare(bp->tx_clk);
>>                clk_disable_unprepare(bp->hclk);
>>                clk_disable_unprepare(bp->pclk);
>> @@ -4632,7 +4632,7 @@ static int __maybe_unused macb_runtime_resume(struct device *dev)
>>        struct net_device *netdev = dev_get_drvdata(dev);
>>        struct macb *bp = netdev_priv(netdev);
>>
>> -     if (!(device_may_wakeup(&bp->dev->dev))) {
>> +     if (!(device_may_wakeup(dev))) {
>>                clk_prepare_enable(bp->pclk);
>>                clk_prepare_enable(bp->hclk);
>>                clk_prepare_enable(bp->tx_clk);
> 


-- 
Nicolas Ferre