ide_pci_generic: add quirk for Netcell ATA RAID

commit c339dfdd65b52bfd947ab29d1210314a2f6d622d upstream.

We need to explicitly mark words 85-87 as valid ones since
firmware doesn't do it.

This should fix support for LBA48 and FLUSH CACHE [EXT] command
which stopped working after we applied more strict checking of
identify words in:

	commit 942dcd85bf8edf38cdc3745306ca250684d99a61
	("ide: idedisk_supports_lba48() -> ata_id_lba48_enabled()")

and

	commit 4b58f17d7c45a8e5f4acda641bec388398b9c0fa
	("ide: ide_id_has_flush_cache() -> ata_id_flush_enabled()")

Reported-and-tested-by: "Trevor Hemsley" <trevor.hemsley@ntlworld.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/ide/ide-pci-generic.c b/drivers/ide/ide-pci-generic.c
index bddae2b329a0e35930e153386eb6c2a15099d6a9..515fd4eb32eb7b85a059728e4fa3ef2b8553ddce 100644 (file)
--- a/drivers/ide/ide-pci-generic.c
+++ b/drivers/ide/ide-pci-generic.c
@@ -35,6 +35,16 @@ MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE st
 
 #define IDE_HFLAGS_UMC (IDE_HFLAG_NO_DMA | IDE_HFLAG_FORCE_LEGACY_IRQS)
 
+static void netcell_quirkproc(ide_drive_t *drive)
+{
+       /* mark words 85-87 as valid */
+       drive->id[ATA_ID_CSF_DEFAULT] |= 0x4000;
+}
+
+static const struct ide_port_ops netcell_port_ops = {
+       .quirkproc              = netcell_quirkproc,
+};
+
 #define DECLARE_GENERIC_PCI_DEV(extra_flags) \
        { \
                .name           = DRV_NAME, \
@@ -76,6 +86,7 @@ static const struct ide_port_info generic_chipsets[] __devinitdata = {
 
        {       /* 6: Revolution */
                .name           = DRV_NAME,
+               .port_ops       = &netcell_port_ops,
                .host_flags     = IDE_HFLAG_CLEAR_SIMPLEX |
                                  IDE_HFLAG_TRUST_BIOS_FOR_DMA |
                                  IDE_HFLAG_OFF_BOARD,