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Commit bfeec8ca authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Jeff Garzik
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ATA: Don't powerdown Compaq Triflex IDE device on suspend 



Don't powerdown Compaq Triflex IDE device on suspend

This fixes APM suspend on Compaq Armada 7400.
APM BIOS doesn't suspend if IDE is powered down when suspending.
The Triflex controller is found only on old Compaq boards,
so this patch will hopefully have no side effects.

Signed-off-by: default avatarMikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent 5f4e2066

drivers/ata/pata_triflex.c

+22 −1
Original line number Diff line number Diff line
@@ -210,13 +210,34 @@ static const struct pci_device_id triflex[] = { 
	{ },

};



#ifdef CONFIG_PM

static int triflex_ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)

{

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

	int rc = 0;



	rc = ata_host_suspend(host, mesg);

	if (rc)

		return rc;



	/*

	 * We must not disable or powerdown the device.

	 * APM bios refuses to suspend if IDE is not accessible.

	 */

	pci_save_state(pdev);



	return 0;

}



#endif



static struct pci_driver triflex_pci_driver = {

	.name 		= DRV_NAME,

	.id_table	= triflex,

	.probe 		= triflex_init_one,

	.remove		= ata_pci_remove_one,

#ifdef CONFIG_PM

	.suspend	= ata_pci_device_suspend,

	.suspend	= triflex_ata_pci_device_suspend,

	.resume		= ata_pci_device_resume,

#endif

};