linux-kernel - Re: [PATCH 2.6.22] remove Intel combined mode quirk

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Date:	Fri, 09 Mar 2007 11:08:09 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Tejun Heo <htejun@...il.com>, linux-ide@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 2.6.22] remove Intel combined mode quirk

Jeff Garzik wrote:
> diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
> index 066689c..0a19466 100644
> --- a/drivers/ata/libata-sff.c
> +++ b/drivers/ata/libata-sff.c
> @@ -779,40 +779,16 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
>  		/* Deal with combined mode hack. This side of the logic all
>  		   goes away once the combined mode hack is killed in 2.6.21 */
>  		if (!devm_request_region(dev, ATA_PRIMARY_CMD, 8, "libata")) {
> -			struct resource *conflict, res;
> -			res.start = ATA_PRIMARY_CMD;
> -			res.end = ATA_PRIMARY_CMD + 8 - 1;
> -			conflict = ____request_resource(&ioport_resource, &res);
> -			while (conflict->child)
> -				conflict = ____request_resource(conflict, &res);
> -			if (!strcmp(conflict->name, "libata"))
> -				legacy_mode |= ATA_PORT_PRIMARY;
> -			else {
> -				pcim_pin_device(pdev);
> -				printk(KERN_WARNING "ata: 0x%0X IDE port busy\n" \
> -						    "ata: conflict with %s\n",
> -						    ATA_PRIMARY_CMD,
> -						    conflict->name);
> -			}
> +			pcim_pin_device(pdev);
> +			printk(KERN_WARNING "ata: 0x%0X IDE port busy\n",
> +					    ATA_PRIMARY_CMD);
>  		} else
>  			legacy_mode |= ATA_PORT_PRIMARY;
>  
>  		if (!devm_request_region(dev, ATA_SECONDARY_CMD, 8, "libata")) {
> -			struct resource *conflict, res;
> -			res.start = ATA_SECONDARY_CMD;
> -			res.end = ATA_SECONDARY_CMD + 8 - 1;
> -			conflict = ____request_resource(&ioport_resource, &res);
> -			while (conflict->child)
> -				conflict = ____request_resource(conflict, &res);
> -			if (!strcmp(conflict->name, "libata"))
> -				legacy_mode |= ATA_PORT_SECONDARY;
> -			else {
> -				pcim_pin_device(pdev);
> -				printk(KERN_WARNING "ata: 0x%X IDE port busy\n" \
> -						    "ata: conflict with %s\n",
> -						    ATA_SECONDARY_CMD,
> -						    conflict->name);
> -			}
> +			pcim_pin_device(pdev);
> +			printk(KERN_WARNING "ata: 0x%X IDE port busy\n",
> +					    ATA_SECONDARY_CMD);
>  		} else
>  			legacy_mode |= ATA_PORT_SECONDARY;

I presume this will lend itself to further devres cleanups, now that 
this code is gone.  I just did the main change.

This will also affect the new init model stuff just posted.

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