linux-kernel - Re: Fwd: [PATCH] net: fddi: skfp: Include generic PCI definitions from pci

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Message-ID: <330fefa3-5301-42b8-4e59-cd0b743e8220@linuxfoundation.org>
Date:   Wed, 19 Jun 2019 12:46:55 -0600
From:   Shuah Khan <skhan@...uxfoundation.org>
To:     Puranjay Mohan <puranjay12@...il.com>,
        Bjorn Helgaas <bjorn@...gaas.com>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Shuah Khan <skhan@...uxfoundation.org>
Subject: Re: Fwd: [PATCH] net: fddi: skfp: Include generic PCI definitions
 from pci_regs.h

On 6/19/19 12:31 PM, Puranjay Mohan wrote:
> On Wed, Jun 19, 2019 at 12:04:19PM -0600, Shuah Khan wrote:
>> On 6/19/19 11:45 AM, Puranjay Mohan wrote:
>>> Include the generic PCI definitions from include/uapi/linux/pci_regs.h
>>> change PCI_REV_ID to PCI_REVISION_ID to make it compatible with the
>>> generic define.
>>> This driver uses only one generic PCI define.
>>>
>>> Signed-off-by: Puranjay Mohan <puranjay12@...il.com>
>>> ---
>>>    drivers/net/fddi/skfp/drvfbi.c | 3 ++-
>>>    1 file changed, 2 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/net/fddi/skfp/drvfbi.c b/drivers/net/fddi/skfp/drvfbi.c
>>> index bdd5700e71fa..38f6d943385d 100644
>>> --- a/drivers/net/fddi/skfp/drvfbi.c
>>> +++ b/drivers/net/fddi/skfp/drvfbi.c
>>> @@ -20,6 +20,7 @@
>>>    #include "h/supern_2.h"
>>>    #include "h/skfbiinc.h"
>>>    #include <linux/bitrev.h>
>>> +#include <uapi/linux/pci_regs.h>
>>>    #ifndef   lint
>>>    static const char ID_sccs[] = "@(#)drvfbi.c       1.63 99/02/11 (C) SK " ;
>>> @@ -127,7 +128,7 @@ static void card_start(struct s_smc *smc)
>>>       *       at very first before any other initialization functions is
>>>       *       executed.
>>>       */
>>> -   rev_id = inp(PCI_C(PCI_REV_ID)) ;
>>> +   rev_id = inp(PCI_C(PCI_REVISION_ID)) ;
>>>      if ((rev_id & 0xf0) == SK_ML_ID_1 || (rev_id & 0xf0) == SK_ML_ID_2) {
>>>              smc->hw.hw_is_64bit = TRUE ;
>>>      } else {
>>>
>>
>> Why not delete the PCI_REV_ID define in:
>>
>> drivers/net/fddi/skfp/h/skfbi.h
>>
> I have removed all generic  PCI definitions from skfbi.h in the next
> patch which I have sent, I wanted to keep it organised by sending two
> patches
> 

Yeah. I saw your second patch come in after I sent my response. :)

>> It looks like this header has duplicate PCI config space header defines,
>> not just this one. Some of them are slightly different names:
>>
>> e.g:
>>
>> #define PCI_CACHE_LSZ   0x0c    /*  8 bit       Cache Line Size */
>>
>> Looks like it defines the standard PCI config space instead of
>> including and using the standard defines from uapi/linux/pci_regs.h
>>
> It defines many duplicate definitions in skfbi.h, but only uses one of
> them, hence they are removed in the next patch as told by bjorn.
> It uses only one generic PCI define in driver code, i.e. PCI_REV_ID, it
> has been replaced by PCI_REVISION_ID to make it work with the define
> included with uapi/linux/pci_regs.h
>> Something to look into.
>>

Sounds like a plan.

thanks,
-- Shuah