pata_netcell: LBA48 force identify bits correct

This matches Bartlomiej's patch for ide_pci_generic:
c339dfdd65b52bfd947ab29d1210314a2f6d622d

In the libata case netcell has its own mini driver. I suspect this fix is
actually only needed for some firmware revs but it does no harm either way.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/ata/pata_netcell.c

@@ -20,13 +20,24 @@
 
 /* No PIO or DMA methods needed for this device */
 
+static unsigned int netcell_read_id(struct ata_device *adev,
+					struct ata_taskfile *tf, u16 *id)
+{
+	unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
+	/* Firmware forgets to mark words 85-87 valid */
+	if (err_mask == 0)
+		id[ATA_ID_CSF_DEFAULT] |= 0x0400;
+	return err_mask;
+}
+
 static struct scsi_host_template netcell_sht = {
 	ATA_BMDMA_SHT(DRV_NAME),
 };
 
 static struct ata_port_operations netcell_ops = {
 	.inherits	= &ata_bmdma_port_ops,
-	.cable_detect		= ata_cable_80wire,
+	.cable_detect	= ata_cable_80wire,
+	.read_id	= netcell_read_id,
 };