diff options
author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-09-27 19:57:54 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-27 19:57:54 +0100 |
commit | 2dc94310bd94d0906febea7d0f7c188da620c952 (patch) | |
tree | 6de4096f1887e2c00966177354b1c378e59bd632 /drivers/scsi/scsi.c | |
parent | c06015148fa9a3cc452ec7121b8c3f59f4a7d6ac (diff) | |
parent | fb60cf4ab52f3520c2119aa42f7d4ed8e7594eb6 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/tmlind/linux-omap-upstream into devel
Diffstat (limited to 'drivers/scsi/scsi.c')
-rw-r--r-- | drivers/scsi/scsi.c | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index b332caddd5b..7a054f9d1ee 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -96,7 +96,11 @@ unsigned int scsi_logging_level; EXPORT_SYMBOL(scsi_logging_level); #endif -const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE] = { +/* NB: These are exposed through /proc/scsi/scsi and form part of the ABI. + * You may not alter any existing entry (although adding new ones is + * encouraged once assigned by ANSI/INCITS T10 + */ +static const char *const scsi_device_types[] = { "Direct-Access ", "Sequential-Access", "Printer ", @@ -107,13 +111,29 @@ const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE] = { "Optical Device ", "Medium Changer ", "Communications ", - "Unknown ", - "Unknown ", + "ASC IT8 ", + "ASC IT8 ", "RAID ", "Enclosure ", "Direct-Access-RBC", + "Optical card ", + "Bridge controller", + "Object storage ", + "Automation/Drive ", }; -EXPORT_SYMBOL(scsi_device_types); + +const char * scsi_device_type(unsigned type) +{ + if (type == 0x1e) + return "Well-known LUN "; + if (type == 0x1f) + return "No Device "; + if (type > ARRAY_SIZE(scsi_device_types)) + return "Unknown "; + return scsi_device_types[type]; +} + +EXPORT_SYMBOL(scsi_device_type); struct scsi_host_cmd_pool { kmem_cache_t *slab; @@ -835,14 +855,14 @@ EXPORT_SYMBOL(scsi_track_queue_full); */ int scsi_device_get(struct scsi_device *sdev) { - if (sdev->sdev_state == SDEV_DEL || sdev->sdev_state == SDEV_CANCEL) + if (sdev->sdev_state == SDEV_DEL) return -ENXIO; if (!get_device(&sdev->sdev_gendev)) return -ENXIO; - if (!try_module_get(sdev->host->hostt->module)) { - put_device(&sdev->sdev_gendev); - return -ENXIO; - } + /* We can fail this if we're doing SCSI operations + * from module exit (like cache flush) */ + try_module_get(sdev->host->hostt->module); + return 0; } EXPORT_SYMBOL(scsi_device_get); @@ -857,7 +877,14 @@ EXPORT_SYMBOL(scsi_device_get); */ void scsi_device_put(struct scsi_device *sdev) { - module_put(sdev->host->hostt->module); + struct module *module = sdev->host->hostt->module; + +#ifdef CONFIG_MODULE_UNLOAD + /* The module refcount will be zero if scsi_device_get() + * was called from a module removal routine */ + if (module && module_refcount(module) != 0) + module_put(module); +#endif put_device(&sdev->sdev_gendev); } EXPORT_SYMBOL(scsi_device_put); @@ -1099,6 +1126,8 @@ static int __init init_scsi(void) for_each_possible_cpu(i) INIT_LIST_HEAD(&per_cpu(scsi_done_q, i)); + scsi_netlink_init(); + printk(KERN_NOTICE "SCSI subsystem initialized\n"); return 0; @@ -1119,6 +1148,7 @@ cleanup_queue: static void __exit exit_scsi(void) { + scsi_netlink_exit(); scsi_sysfs_unregister(); scsi_exit_sysctl(); scsi_exit_hosts(); |