1 files changed, 22 insertions, 2 deletions

diff --git a/drivers/ata/pata_cs5520.c b/drivers/ata/pata_cs5520.c
index 33d2b88f9c79..f839c0304b3a 100644
--- a/drivers/ata/pata_cs5520.c
+++ b/drivers/ata/pata_cs5520.c
@@ -41,7 +41,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME        "pata_cs5520"
-#define DRV_VERSION     "0.6.2"
+#define DRV_VERSION     "0.6.3"
 
 struct pio_clocks
 {
@@ -168,6 +168,8 @@ static struct scsi_host_template cs5520_sht = {
         .slave_configure        = ata_scsi_slave_config,
         .slave_destroy          = ata_scsi_slave_destroy,
         .bios_param             = ata_std_bios_param,
+        .resume                 = ata_scsi_device_resume,
+        .suspend                = ata_scsi_device_suspend,
 };
 
 static struct ata_port_operations cs5520_port_ops = {
@@ -297,6 +299,22 @@ static void __devexit cs5520_remove_one(struct pci_dev *pdev)
         dev_set_drvdata(dev, NULL);
 }
 
+/**
+ *      cs5520_reinit_one       -       device resume
+ *      @pdev: PCI device
+ *
+ *      Do any reconfiguration work needed by a resume from RAM. We need
+ *      to restore DMA mode support on BIOSen which disabled it
+ */
+ 
+static int cs5520_reinit_one(struct pci_dev *pdev)
+{
+        u8 pcicfg;
+        pci_read_config_byte(pdev, 0x60, &pcicfg);
+        if ((pcicfg & 0x40) == 0)
+                pci_write_config_byte(pdev, 0x60, pcicfg | 0x40);
+        return ata_pci_device_resume(pdev);
+}
 /* For now keep DMA off. We can set it for all but A rev CS5510 once the
    core ATA code can handle it */
 
@@ -311,7 +329,9 @@ static struct pci_driver cs5520_pci_driver = {
         .name           = DRV_NAME,
         .id_table       = pata_cs5520,
         .probe          = cs5520_init_one,
-        .remove         = cs5520_remove_one
+        .remove         = cs5520_remove_one,
+        .suspend        = ata_pci_device_suspend,
+        .resume         = cs5520_reinit_one,
 };
 
 static int __init cs5520_init(void)