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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-06 14:03:44 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-06 14:03:44 -0700 |
| commit | f63bafe55654caf3a62f73500eafd1b89ca6f7ff (patch) | |
| tree | d8c80b71e1197fb805c07282139377e9542421ea /drivers/firewire/sbp2.c | |
| parent | 4148df9b0f38bdd362dd91d52076926c11cbe5a9 (diff) | |
| parent | ebbb16bffa646f853899ef3fdc0ac7abab888703 (diff) | |
| download | linux-f63bafe55654caf3a62f73500eafd1b89ca6f7ff.tar.bz2 | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
ieee1394: sbp2: add support for disks >2 TB (and 16 bytes long CDBs)
firewire: sbp2: add support for disks >2 TB (and 16 bytes long CDBs)
firewire: core: do not DMA-map stack addresses
Diffstat (limited to 'drivers/firewire/sbp2.c')
| -rw-r--r-- | drivers/firewire/sbp2.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/firewire/sbp2.c b/drivers/firewire/sbp2.c index 24c45635376a..8d51568ee143 100644 --- a/drivers/firewire/sbp2.c +++ b/drivers/firewire/sbp2.c @@ -201,6 +201,12 @@ static struct fw_device *target_device(struct sbp2_target *tgt) #define SBP2_CYCLE_LIMIT (0xc8 << 12) /* 200 125us cycles */ /* + * There is no transport protocol limit to the CDB length, but we implement + * a fixed length only. 16 bytes is enough for disks larger than 2 TB. + */ +#define SBP2_MAX_CDB_SIZE 16 + +/* * The default maximum s/g segment size of a FireWire controller is * usually 0x10000, but SBP-2 only allows 0xffff. Since buffers have to * be quadlet-aligned, we set the length limit to 0xffff & ~3. @@ -312,7 +318,7 @@ struct sbp2_command_orb { struct sbp2_pointer next; struct sbp2_pointer data_descriptor; __be32 misc; - u8 command_block[12]; + u8 command_block[SBP2_MAX_CDB_SIZE]; } request; struct scsi_cmnd *cmd; scsi_done_fn_t done; @@ -1146,6 +1152,8 @@ static int sbp2_probe(struct device *dev) if (fw_device_enable_phys_dma(device) < 0) goto fail_shost_put; + shost->max_cmd_len = SBP2_MAX_CDB_SIZE; + if (scsi_add_host(shost, &unit->device) < 0) goto fail_shost_put; |