linux-kernel - Re: [PATCH 1/1] [SCSI] gdth: misc cleanups, preparation for ISA/EISA hotplug API

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Date:	Sun, 24 Feb 2008 00:18:23 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Christoph Hellwig <hch@...radead.org>
CC:	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] [SCSI] gdth: misc cleanups, preparation for	ISA/EISA
 hotplug API

Christoph Hellwig wrote:
> Eventually we shoud just kill the INT_COAL ifdefed code.  It has never
> been enabled and clutters up the driver quite badly.

Noted (queued)...  fine by me, and makes life easier.


>> +#ifdef CONFIG_EISA
>> +	if ((ha->type == GDT_EISA) && (ha->ccb_phys))
>> +		pci_unmap_single(ha->pdev, ha->ccb_phys, sizeof(gdth_cmd_str),
>> +				 PCI_DMA_BIDIRECTIONAL);
>> +#endif /* CONFIG_EISA */
> 
> I don't think moving this into the common helper makes any sense, as
> it's only ever done for the eisa adapter.  Just keep it local there.
> 
>> +#ifdef CONFIG_EISA
>> +	if (ha->type == GDT_EISA) {
>> +		ha->ccb_phys = pci_map_single(ha->pdev, &ha->cmdext,
>> +				sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
>> +		if (!ha->ccb_phys)
>> +			goto out_free;
>> +	}
>> +#endif /* CONFIG_EISA */
> 
> Same here.

hmmmmm.  We'll see how it plays out...  on the remove side, the above is 
exact what happens in gdth_remove_one() without my patch, thus 
consolidating two cases of the same code into one.  There is a 
less-strong argument for doing the allocation that way, but it may turn 
out to be useful anyway once the ISA/EISA API conversion is complete.

	Jeff


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