diff options
| -rw-r--r-- | drivers/ide/ide-disk.c | 21 | ||||
| -rw-r--r-- | include/linux/ata.h | 9 |
2 files changed, 15 insertions, 15 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index 08f47cb13425..8f49bc0ecbf8 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -384,16 +384,6 @@ static unsigned long long sectors_to_MB(unsigned long long n) } /* - * The same here. - */ -static inline int idedisk_supports_lba48(const u16 *id) -{ - return (id[ATA_ID_COMMAND_SET_2] & 0x0400) && - (id[ATA_ID_CFS_ENABLE_2] & 0x0400) && - ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); -} - -/* * Some disks report total number of sectors instead of * maximum sector address. We list them here. */ @@ -407,7 +397,7 @@ static const struct drive_list_entry hpa_list[] = { static void idedisk_check_hpa(ide_drive_t *drive) { unsigned long long capacity, set_max; - int lba48 = idedisk_supports_lba48(drive->id); + int lba48 = ata_id_lba48_enabled(drive->id); capacity = drive->capacity64; @@ -450,7 +440,7 @@ static void init_idedisk_capacity(ide_drive_t *drive) */ int hpa = ata_id_hpa_enabled(id); - if (idedisk_supports_lba48(id)) { + if (ata_id_lba48_enabled(id)) { /* drive speaks 48-bit LBA */ drive->select.b.lba = 1; drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2); @@ -754,9 +744,11 @@ static int set_lba_addressing(ide_drive_t *drive, int arg) if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) return 0; - if (!idedisk_supports_lba48(drive->id)) + if (ata_id_lba48_enabled(drive->id) == 0) return -EIO; + drive->addressing = arg; + return 0; } @@ -853,8 +845,7 @@ static void idedisk_setup(ide_drive_t *drive) capacity = idedisk_capacity(drive); if (!drive->forced_geom) { - - if (idedisk_supports_lba48(drive->id)) { + if (ata_id_lba48_enabled(drive->id)) { /* compatibility */ drive->bios_sect = 63; drive->bios_head = 255; diff --git a/include/linux/ata.h b/include/linux/ata.h index d28aad991c75..8162257b474f 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -574,6 +574,15 @@ static inline int ata_id_has_lba48(const u16 *id) return id[ATA_ID_COMMAND_SET_2] & (1 << 10); } +static inline int ata_id_lba48_enabled(const u16 *id) +{ + if (ata_id_has_lba48(id) == 0) + return 0; + if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) + return 0; + return id[ATA_ID_CFS_ENABLE_2] & (1 << 10); +} + static inline int ata_id_hpa_enabled(const u16 *id) { /* Yes children, word 83 valid bits cover word 82 data */ |