linux-kernel - Re: [PATCH v6 7/7] PCI: Unify wait for link active into generic pci

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Date:   Fri, 19 Jan 2018 21:52:28 +0530
From:   poza@...eaurora.org
To:     Sinan Kaya <okaya@...eaurora.org>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dongdong Liu <liudongdong3@...wei.com>,
        Keith Busch <keith.busch@...el.com>, Wei Zhang <wzhang@...com>,
        Timur Tabi <timur@...eaurora.org>
Subject: Re: [PATCH v6 7/7] PCI: Unify wait for link active into generic pci

On 2018-01-19 19:47, Sinan Kaya wrote:
> On 1/19/2018 6:10 AM, Oza Pawandeep wrote:
>> +++ b/drivers/pci/pcie/pcie-dpc.c
>> @@ -150,37 +150,9 @@ static void dpc_wait_link_inactive(struct dpc_dev 
>> *dpc)
>>  	struct pci_dev *pdev = dpc->dev->port;
>>  	struct device *dev = &dpc->dev->device;
>>  	u16 lnk_status;
>> +	bool active = false;
>> 
>> -	pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lnk_status);
>> -	while (lnk_status & PCI_EXP_LNKSTA_DLLLA &&
>> -					!time_after(jiffies, timeout)) {
>> -		msleep(10);
>> -		pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lnk_status);
>> -	}
>> -	if (lnk_status & PCI_EXP_LNKSTA_DLLLA)
>> -		dev_warn(dev, "Link state not disabled for DPC event\n");
>> -}
> 
> I think you should reorder 6 and 7 to eliminate this.

Sure will reorder them

Regards,
Oza.