From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> Subject: [PATCH] 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: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> --- earlier references: https://lkml.org/lkml/2009/11/25/369 drivers/ata/pata_pdc2027x.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) Index: b/drivers/ata/pata_pdc2027x.c =================================================================== --- a/drivers/ata/pata_pdc2027x.c +++ b/drivers/ata/pata_pdc2027x.c @@ -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_dr .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 = { @@ -758,6 +763,31 @@ static int __devinit pdc2027x_init_one(s 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. */ -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
