linux-kernel - Re: [PATCH 5/5] wifi: rtw89: Remove redundant pci_clear

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Message-ID: <168052913602.11825.8401946165259356841.kvalo@kernel.org>
Date:   Mon,  3 Apr 2023 13:38:57 +0000 (UTC)
From:   Kalle Valo <kvalo@...nel.org>
To:     Cai Huoqing <cai.huoqing@...ux.dev>
Cc:     cai.huoqing@...ux.dev, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Yan-Hsuan Chuang <tony0620emma@...il.com>,
        Ping-Ke Shih <pkshih@...ltek.com>, ath10k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, ath11k@...ts.infradead.org,
        ath12k@...ts.infradead.org
Subject: Re: [PATCH 5/5] wifi: rtw89: Remove redundant pci_clear_master

Cai Huoqing <cai.huoqing@...ux.dev> wrote:

> Remove pci_clear_master to simplify the code,
> the bus-mastering is also cleared in do_pci_disable_device,
> like this:
> ./drivers/pci/pci.c:2197
> static void do_pci_disable_device(struct pci_dev *dev)
> {
> 	u16 pci_command;
> 
> 	pci_read_config_word(dev, PCI_COMMAND, &pci_command);
> 	if (pci_command & PCI_COMMAND_MASTER) {
> 		pci_command &= ~PCI_COMMAND_MASTER;
> 		pci_write_config_word(dev, PCI_COMMAND, pci_command);
> 	}
> 
> 	pcibios_disable_device(dev);
> }.
> And dev->is_busmaster is set to 0 in pci_disable_device.
> 
> Signed-off-by: Cai Huoqing <cai.huoqing@...ux.dev>
> Reviewed-by: Simon Horman <simon.horman@...igine.com>
> Acked-by: Ping-Ke Shih <pkshih@...ltek.com>

Patch applied to wireless-next.git, thanks.

5995f7463101 wifi: rtw89: Remove redundant pci_clear_master

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20230323112613.7550-5-cai.huoqing@linux.dev/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches