linux-kernel - Re: [PATCH V3] edac, amd64_edac: Modify usage of amd64_read_dct_pci

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Date:	Tue, 9 Sep 2014 09:37:21 -0500
From:	Aravind Gopalakrishnan <aravind.gopalakrishnan@....com>
To:	Borislav Petkov <bp@...en8.de>
CC:	<dougthompson@...ssion.com>, <m.chehab@...sung.com>,
	<linux-edac@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V3] edac, amd64_edac: Modify usage of amd64_read_dct_pci_cfg()

On 9/9/2014 6:42 AM, Borislav Petkov wrote:
> On Tue, Sep 02, 2014 at 12:45:57PM -0500, Aravind Gopalakrishnan wrote:
>> @@ -495,15 +493,56 @@ int __amd64_read_pci_cfg_dword(struct pci_dev *pdev, int offset,
>>   			       u32 *val, const char *func);
>>   int __amd64_write_pci_cfg_dword(struct pci_dev *pdev, int offset,
>>   				u32 val, const char *func);
>> -
>> +void f15h_select_dct(struct amd64_pvt *pvt, u8 dct);
>>   #define amd64_read_pci_cfg(pdev, offset, val)	\
>>   	__amd64_read_pci_cfg_dword(pdev, offset, val, __func__)
>>   
>>   #define amd64_write_pci_cfg(pdev, offset, val)	\
>>   	__amd64_write_pci_cfg_dword(pdev, offset, val, __func__)
>>   
>> -#define amd64_read_dct_pci_cfg(pvt, offset, val) \
>> -	pvt->ops->read_dct_pci_cfg(pvt, offset, val, __func__)
>> +/*
>> + * Depending on the family, F2 DCT reads need special handling:
>> + *
>> + * K8: has a single DCT only and no address offsets >= 0x100
>> + *
>> + * F10h: each DCT has its own set of regs
>> + *	DCT0 -> F2x040..
>> + *	DCT1 -> F2x140..
>> + *
>> + * F16h: has only 1 DCT
>> + *
>> + * For all above families, we should use the 'raw' version
>> + * i.e, amd64_read_pci_cfg() function
>> + */
>> +static inline int amd64_read_dct_pci_cfg(struct amd64_pvt *pvt, u8 dct,
>> +					 int offset, u32 *val)
> Why is this function in the header since it is being used only in
> amd64_edac.c, AFAICT?
>
> This makes you export f15h_select_dct() too, for no apparent reason.
>

Hmm. Yeah, no particular reason. The earlier macro was here so I think I 
just expanded it as an inline function here..
I shall move it to amd64_edac.c and resend.

Thanks,
-Aravind.
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