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path: root/drivers/ata/pata_jmicron.c
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Diffstat (limited to 'drivers/ata/pata_jmicron.c')
-rw-r--r--drivers/ata/pata_jmicron.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/ata/pata_jmicron.c b/drivers/ata/pata_jmicron.c
index 2d661cb4df3c..d50264af2848 100644
--- a/drivers/ata/pata_jmicron.c
+++ b/drivers/ata/pata_jmicron.c
@@ -204,20 +204,12 @@ static int jmicron_init_one (struct pci_dev *pdev, const struct pci_device_id *i
204 204
205 u32 reg; 205 u32 reg;
206 206
207 if (id->driver_data != 368) { 207 /* PATA controller is fn 1, AHCI is fn 0 */
208 /* Put the controller into AHCI mode in case the AHCI driver 208 if (id->driver_data != 368 && PCI_FUNC(pdev->devfn) != 1)
209 has not yet been loaded. This can be done with either 209 return -ENODEV;
210 function present */
211 210
212 /* FIXME: We may want a way to override this in future */ 211 /* The 365/66 have two PATA channels, redirect the second */
213 pci_write_config_byte(pdev, 0x41, 0xa1); 212 if (id->driver_data == 365 || id->driver_data == 366) {
214
215 /* PATA controller is fn 1, AHCI is fn 0 */
216 if (PCI_FUNC(pdev->devfn) != 1)
217 return -ENODEV;
218 }
219 if ( id->driver_data == 365 || id->driver_data == 366) {
220 /* The 365/66 have two PATA channels, redirect the second */
221 pci_read_config_dword(pdev, 0x80, &reg); 213 pci_read_config_dword(pdev, 0x80, &reg);
222 reg |= (1 << 24); /* IDE1 to PATA IDE secondary */ 214 reg |= (1 << 24); /* IDE1 to PATA IDE secondary */
223 pci_write_config_dword(pdev, 0x80, reg); 215 pci_write_config_dword(pdev, 0x80, reg);