diff options
| -rw-r--r-- | drivers/ata/libata-core.c | 4 | ||||
| -rw-r--r-- | include/linux/ata.h | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4dc6befa5760..24b3bd63621f 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2304,6 +2304,10 @@ int ata_dev_configure(struct ata_device *dev) dev->max_sectors = ATA_MAX_SECTORS; } + if ((dev->class == ATA_DEV_ATAPI) && + (atapi_command_packet_set(id) == TYPE_TAPE)) + dev->max_sectors = ATA_MAX_SECTORS_TAPE; + if (dev->horkage & ATA_HORKAGE_MAX_SEC_128) dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128, dev->max_sectors); diff --git a/include/linux/ata.h b/include/linux/ata.h index 128dc7ad4901..61535e72834d 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -43,6 +43,7 @@ enum { ATA_MAX_SECTORS_128 = 128, ATA_MAX_SECTORS = 256, ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */ + ATA_MAX_SECTORS_TAPE = 65535, ATA_ID_WORDS = 256, ATA_ID_SERNO = 10, @@ -544,6 +545,11 @@ static inline int atapi_cdb_len(const u16 *dev_id) } } +static inline int atapi_command_packet_set(const u16 *dev_id) +{ + return (dev_id[0] >> 8) & 0x1f; +} + static inline int is_atapi_taskfile(const struct ata_taskfile *tf) { return (tf->protocol == ATA_PROT_ATAPI) || |