linux-kernel - Re: [PATCH -next] PCI: dwc: fix compile err for pcie-tagra194

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Message-ID: <e16eb1a7-6ada-a8ed-c308-6fc5c9a8b7be@nvidia.com>
Date:   Fri, 20 Mar 2020 10:45:29 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Qiujun Huang <hqjagain@...il.com>, <anders.roxell@...aro.org>
CC:     <jingoohan1@...il.com>, <gustavo.pimentel@...opsys.com>,
        <amurray@...goodpenguin.co.uk>, <bhelgaas@...gle.com>,
        <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] PCI: dwc: fix compile err for pcie-tagra194



On 3/19/2020 11:07 PM, Lorenzo Pieralisi wrote:
> External email: Use caution opening links or attachments
> 
> 
> On Thu, Mar 19, 2020 at 08:36:20PM +0800, Qiujun Huang wrote:
>> make allmodconfig
>> ERROR: modpost: "dw_pcie_ep_init_notify" [drivers/pci/controller/dwc/pcie-tegra194.ko] undefined!
>> ERROR: modpost: "dw_pcie_ep_init_complete" [drivers/pci/controller/dwc/pcie-tegra194.ko] undefined!
>> ERROR: modpost: "dw_pcie_ep_linkup" [drivers/pci/controller/dwc/pcie-tegra194.ko] undefined!
>> make[2]: *** [__modpost] Error 1
>> make[1]: *** [modules] Error 2
>> make: *** [sub-make] Error 2
>>
>> need to export the symbols.
>>
>> Signed-off-by: Qiujun Huang <hqjagain@...il.com>
>> ---
>>   drivers/pci/controller/dwc/pcie-designware-ep.c | 3 +++
>>   1 file changed, 3 insertions(+)
> 
> I have squashed this in with the original patch.
> 
> @Vidya: is this something we missed in the review cycle ? Asking just
> to make sure it was not me who made a mistake while merging the code.
My apologies. I wasn't compiling the driver as a module (instead built 
into the kernel image)
BTW, I see
ERROR: modpost: "dw_pcie_ep_init" 
[drivers/pci/controller/dwc/pcie-tegra194.ko] undefined!
also along with the above three. So I think even dw_pcie_ep_init() needs 
to be exported.

Thanks,
Vidya Sagar
> 
> Thanks,
> Lorenzo
> 
>> diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
>> index 4233c43..60d62ef 100644
>> --- a/drivers/pci/controller/dwc/pcie-designware-ep.c
>> +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
>> @@ -18,6 +18,7 @@ void dw_pcie_ep_linkup(struct dw_pcie_ep *ep)
>>
>>        pci_epc_linkup(epc);
>>   }
>> +EXPORT_SYMBOL_GPL(dw_pcie_ep_linkup);
>>
>>   void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep)
>>   {
>> @@ -25,6 +26,7 @@ void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep)
>>
>>        pci_epc_init_notify(epc);
>>   }
>> +EXPORT_SYMBOL_GPL(dw_pcie_ep_init_notify);
>>
>>   static void __dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar,
>>                                   int flags)
>> @@ -535,6 +537,7 @@ int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep)
>>
>>        return 0;
>>   }
>> +EXPORT_SYMBOL_GPL(dw_pcie_ep_init_complete);
>>
>>   int dw_pcie_ep_init(struct dw_pcie_ep *ep)
>>   {
>> --
>> 1.8.3.1
>>