linux-kernel - Re: [PATCH v3 6/7] PCI: xilinx-nwl: Add phy support

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Message-ID: <ad8da38a-5e3d-4f79-8744-66acf73703af@linux.dev>
Date: Fri, 24 May 2024 10:38:23 -0400
From: Sean Anderson <sean.anderson@...ux.dev>
To: Markus Elfring <Markus.Elfring@....de>,
 linux-arm-kernel@...ts.infradead.org, linux-pci@...r.kernel.org,
 kernel-janitors@...r.kernel.org, Krzysztof Wilczyński
 <kw@...ux.com>, Lorenzo Pieralisi <lpieralisi@...nel.org>,
 Rob Herring <robh@...nel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>,
 Bjorn Helgaas <bhelgaas@...gle.com>,
 Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
 Michal Simek <michal.simek@....com>, Michal Simek <michal.simek@...inx.com>,
 Thippeswamy Havalige <thippeswamy.havalige@....com>
Subject: Re: [PATCH v3 6/7] PCI: xilinx-nwl: Add phy support

On 5/24/24 04:16, Markus Elfring wrote:
>> Add support for enabling/disabling PCIe phys. We can't really do
>> anything about failures in the disable/remove path, so just warn.
> …
>> +++ b/drivers/pci/controller/pcie-xilinx-nwl.c
> …
>> @@ -818,12 +876,15 @@ static int nwl_pcie_probe(struct platform_device *pdev)
>>  		err = nwl_pcie_enable_msi(pcie);
>>  		if (err < 0) {
>>  			dev_err(dev, "failed to enable MSI support: %d\n", err);
>> -			goto err_clk;
>> +			goto err_phy;
>>  		}
>>  	}
>>
>>  	err = pci_host_probe(bridge);
>>
>> +err_phy:
>> +	if (err)
>> +		nwl_pcie_phy_disable(pcie);
>>  err_clk:
>>  	if (err)
>>  		clk_disable_unprepare(pcie->clk);
> 
> I got the impression that some source code adjustments should be performed
> in another separate update step for this function implementation.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.9#n81
> 
> You propose to extend the exception handling here.
> Does such information indicate a need for another tag “Fixes”?

Huh? I am only disabling what I enabled...

--Sean