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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2011-10-13 12:57:51 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2011-10-14 13:32:52 -0400 |
| commit | adacaf1449ebb69f68075ba197495e3a61946fc2 (patch) | |
| tree | 3824335aa08896728232dd8f908599af2fda5013 | |
| parent | b2f104bba39e16f48b7e0ac6447cc167c54505b8 (diff) | |
| download | linux-stable-adacaf1449ebb69f68075ba197495e3a61946fc2.tar.gz linux-stable-adacaf1449ebb69f68075ba197495e3a61946fc2.tar.bz2 linux-stable-adacaf1449ebb69f68075ba197495e3a61946fc2.zip | |
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@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
| -rw-r--r-- | drivers/ata/pata_pdc2027x.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/ata/pata_pdc2027x.c b/drivers/ata/pata_pdc2027x.c index b1511f38b0e8..7d63f24179c7 100644 --- 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_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. */ |