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Commit adacaf14 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz Committed by Jeff Garzik
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pata_pdc2027x: add Power Management support 



Fixes IDE -> libata regression.

There shouldn't be any problems with it as corresponding IDE's host
driver (pdc202xx_new) has been supporting PCI Power Management since
Oct 10 2008 (commit feb22b7f "ide: add proper PCI PM support (v2)")
and IDE PM since Jun 14 2003 (patch v2.5.73 "ide: Power Management").

Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent b2f104bb

drivers/ata/pata_pdc2027x.c

+30 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ enum { 
};



static int pdc2027x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);

static int pdc2027x_reinit_one(struct pci_dev *pdev);

static int pdc2027x_prereset(struct ata_link *link, unsigned long deadline);

static void pdc2027x_set_piomode(struct ata_port *ap, struct ata_device *adev);

static void pdc2027x_set_dmamode(struct ata_port *ap, struct ata_device *adev);
@@ -126,6 +127,10 @@ static struct pci_driver pdc2027x_pci_driver = { 
	.id_table		= pdc2027x_pci_tbl,

	.probe			= pdc2027x_init_one,

	.remove			= ata_pci_remove_one,

#ifdef CONFIG_PM

	.suspend		= ata_pci_device_suspend,

	.resume			= pdc2027x_reinit_one,

#endif

};



static struct scsi_host_template pdc2027x_sht = {
@@ -754,6 +759,31 @@ static int __devinit pdc2027x_init_one(struct pci_dev *pdev, const struct pci_de 
				 IRQF_SHARED, &pdc2027x_sht);

}



#ifdef CONFIG_PM

static int pdc2027x_reinit_one(struct pci_dev *pdev)

{

	struct ata_host *host = dev_get_drvdata(&pdev->dev);

	unsigned int board_idx;

	int rc;



	rc = ata_pci_device_do_resume(pdev);

	if (rc)

		return rc;



	if (pdev->device == PCI_DEVICE_ID_PROMISE_20268 ||

	    pdev->device == PCI_DEVICE_ID_PROMISE_20270)

		board_idx = PDC_UDMA_100;

	else

		board_idx = PDC_UDMA_133;



	if (pdc_hardware_init(host, board_idx))

		return -EIO;



	ata_host_resume(host);

	return 0;

}

#endif



/**

 * pdc2027x_init - Called after this module is loaded into the kernel.

 */