diff options
| author | Mark Lord <liml@rtr.ca> | 2007-02-02 12:36:25 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-04-28 14:15:55 -0400 |
| commit | f0ef88ed413232daebfe675c7b1bbf100d604d4b (patch) | |
| tree | fc235d7aede0d6c4d2e500ef5d0446122eaa611a | |
| parent | cd0d3bbcdd650651b7ccfaf55d107e3fc237d95a (diff) | |
| download | linux-f0ef88ed413232daebfe675c7b1bbf100d604d4b.tar.bz2 | |
RESEND: libata: check cdb len per dev instead of per host
Resending, with s/printk/DPRINTK/ as pointed out by Alan.
Fix libata to perform CDB len validation per device
rather than per host. This way, validation still works
when we have a mix of 12-byte and 16-byte devices on
a common host interface.
Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | drivers/ata/libata-core.c | 18 | ||||
| -rw-r--r-- | drivers/ata/libata-scsi.c | 5 |
2 files changed, 4 insertions, 19 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 2b998b321881..99a881558e8d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1560,20 +1560,6 @@ static void ata_dev_config_ncq(struct ata_device *dev, snprintf(desc, desc_sz, "NCQ (depth %d/%d)", hdepth, ddepth); } -static void ata_set_port_max_cmd_len(struct ata_port *ap) -{ - int i; - - if (ap->scsi_host) { - unsigned int len = 0; - - for (i = 0; i < ATA_MAX_DEVICES; i++) - len = max(len, ap->device[i].cdb_len); - - ap->scsi_host->max_cmd_len = len; - } -} - /** * ata_dev_configure - Configure the specified ATA/ATAPI device * @dev: Target device to configure @@ -1773,8 +1759,6 @@ int ata_dev_configure(struct ata_device *dev) } } - ata_set_port_max_cmd_len(ap); - /* limit bridge transfers to udma5, 200 sectors */ if (ata_dev_knobble(dev)) { if (ata_msg_drv(ap) && print_info) @@ -5670,7 +5654,7 @@ static void ata_port_init_shost(struct ata_port *ap, struct Scsi_Host *shost) shost->max_id = 16; shost->max_lun = 1; shost->max_channel = 1; - shost->max_cmd_len = 12; + shost->max_cmd_len = 16; } /** diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index e9364434182c..7d41afe8ccbc 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2792,8 +2792,9 @@ static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, { int rc = 0; - if (unlikely(!scmd->cmd_len)) { - ata_dev_printk(dev, KERN_WARNING, "WARNING: zero len CDB\n"); + if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) { + DPRINTK("bad CDB len=%u, max=%u\n", + scmd->cmd_len, dev->cdb_len); scmd->result = DID_ERROR << 16; done(scmd); return 0; |