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Subject: Re: [PATCH v2 1/4] PCI: designware-ep: Allow pci_epc_set_bar() update
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To: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Niklas Cassel <Niklas.Cassel@wdc.com>, Frank Li <Frank.li@nxp.com>,
 Vidya Sagar <vidyas@nvidia.com>, "helgaas@kernel.org" <helgaas@kernel.org>,
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References: <20220222162355.32369-1-Frank.Li@nxp.com>
 <20220222162355.32369-2-Frank.Li@nxp.com> <ZXsRp+Lzg3x/nhk3@x1-carbon>
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 <20231219175900.GA24515@thinkpad>
 <c33b8830-5237-438f-9aae-6905e9e538b8@kernel.org>
 <20231220060357.GA3544@thinkpad>
From: Damien Le Moal <dlemoal@kernel.org>
Organization: Western Digital Research
In-Reply-To: <20231220060357.GA3544@thinkpad>
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On 12/20/23 15:03, Manivannan Sadhasivam wrote:
>> We have core_init and link_up notifiers for EPF drivers. Adding link_down and
>> core_exit notifiers would make a lot of sense :) A core_reset notifier could
>> also be a solution.
>>
> 
> Yeah, I'm thinking along those lines.
> 
>> Adding that would also help EPF drivers to handle links going down temporarily
>> (which can happen). Right now, an EPF driver can only deal with such event by
>> tracking if it gets multiple link_up events.
>>
> 
> There is already link_down notifier that I introduced a while back. But it is
> only used by MHI_EPF driver.

I missed that. I need that notifier :)

-- 
Damien Le Moal
Western Digital Research