linux-kernel - [PATCH 59/86] pata_pdc2027x: add Power Management support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 25 Nov 2009 18:09:25 +0100
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	linux-ide@...r.kernel.org
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 59/86] pata_pdc2027x: add Power Management support

From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: [PATCH] pata_pdc2027x: add Power Management support

There shouldn't be any problems with it as IDE pdc202xx_new host driver
has been supporting Power Management for over year now.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
 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-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/