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>

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/ata/pata_netcell.c b/drivers/ata/pata_netcell.c
index bdb236957cb9..9a698097134b 100644
--- a/drivers/ata/pata_netcell.c
+++ b/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,
 };