netdev - Re: [PATCH] forcedeth: Addition of new device id (resend without pci

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Message-ID: <4A26A820.4040105@nvidia.com>
Date:	Wed, 03 Jun 2009 12:43:12 -0400
From:	Ayaz Abdulla <aabdulla@...dia.com>
To:	David Miller <davem@...emloft.net>
CC:	"manfred@...orfullife.com" <manfred@...orfullife.com>,
	"akpm@...l.org" <akpm@...l.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] forcedeth: Addition of new device id (resend without
 pci_ids.h)



David Miller wrote:
> From: Ayaz Abdulla <aabdulla@...dia.com>
> Date: Wed, 03 Jun 2009 12:24:37 -0400
> 
> 
>>
>>David Miller wrote:
>>
>>>From: Ayaz Abdulla <aabdulla@...dia.com>
>>>Date: Wed, 03 Jun 2009 12:06:04 -0400
>>>
>>>
>>>>Add support for new ethernet device in the MCP89 chipset.
>>>>
>>>>Signed-off-by: Ayaz Abdulla <aabdulla@...dia.com>
>>>
>>>Just use the constant directly, please :-)
>>
>>But there is place in the patch that refers to device id so it makes
>>more sense to have a macro. i.e
>>
>>+       if (np->device_id != PCI_DEVICE_ID_NVIDIA_NVENET_40)
>>
>>other places in the code also refer to device ids for certain
>>workarounds. i.e.
>>
>>		if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
>>		     id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
> 
> 
> And you can add the define when that is necessary.
> 
> Otherwise, it's being used in exactly one location, the ID table.
> And for that purpose it's superfluous.
> 
> You could also change the driver to use a bitmask of HW workaround
> cases, that gets set very early in the probe.  And the HW
> workarounds are keyed on those bit masks (one test) compared
> to the direct ID checks (potentially multiple compares).
> 
> It would be both cleaner and more efficient.  And you could still
> use the direct constants without any real loss of clarity.

Ok, I will do that in next patch...

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