From: Stefan Roese <sr@denx.de>
To: "René van Dorst" <opensource@vdorst.com>,
"Mao Wenan" <maowenan@huawei.com>
Cc: nbd@openwrt.org, nelson.chang@mediatek.com,
netdev@vger.kernel.org, sean.wang@mediatek.com,
kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mediatek@lists.infradead.org, john@phrozen.org,
matthias.bgg@gmail.com, davem@davemloft.net,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 -next] net: mediatek: remove set but not used variable 'status'
Date: Mon, 26 Aug 2019 09:27:08 +0200 [thread overview]
Message-ID: <ce9fd217-f838-1e04-eacd-7fe9f07dc745@denx.de> (raw)
In-Reply-To: <20190826071048.Horde.gwS9nzceYYiYGJLnJ6-x2hz@www.vdorst.com>
Hi!
On 26.08.19 09:10, René van Dorst wrote:
> Let's add Stefan to the conversation.
> He is the author of this commit.
Thanks Rene.
> Quoting Mao Wenan <maowenan@huawei.com>:
>
>> Fixes gcc '-Wunused-but-set-variable' warning:
>> drivers/net/ethernet/mediatek/mtk_eth_soc.c: In function mtk_handle_irq:
>> drivers/net/ethernet/mediatek/mtk_eth_soc.c:1951:6: warning:
>> variable status set but not used [-Wunused-but-set-variable]
>>
>> Fixes: 296c9120752b ("net: ethernet: mediatek: Add MT7628/88 SoC support")
>> Signed-off-by: Mao Wenan <maowenan@huawei.com>
>> ---
>> v2: change format of 'Fixes' tag.
>> drivers/net/ethernet/mediatek/mtk_eth_soc.c | 2 --
>> 1 file changed, 2 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> index 8ddbb8d..bb7d623 100644
>> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
>> @@ -1948,9 +1948,7 @@ static irqreturn_t mtk_handle_irq_tx(int irq,
>> void *_eth)
>> static irqreturn_t mtk_handle_irq(int irq, void *_eth)
>> {
>> struct mtk_eth *eth = _eth;
>> - u32 status;
>>
>> - status = mtk_r32(eth, MTK_PDMA_INT_STATUS);
>
> Hi Stefan,
>
> You added an extra MTK_PDMA_INT_STATUS read in mtk_handle_irq()
> Is that read necessary to work properly?
No, its not needed. This read must have "slipped in" from some earlier
patch versions and I forgot to remove it later. Thanks for catching it.
Reviewed-by: Stefan Roese <sr@denx.de>
Thanks,
Stefan
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next prev parent reply other threads:[~2019-08-26 7:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190824.142158.1506174328495468705.davem@davemloft.net>
2019-08-26 1:31 ` [PATCH v2 -next] net: mediatek: remove set but not used variable 'status' Mao Wenan
2019-08-26 2:06 ` David Miller
2019-08-26 7:10 ` René van Dorst
2019-08-26 7:27 ` Stefan Roese [this message]
2019-08-28 3:48 ` David Miller
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