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author | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
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committer | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
commit | 23930fa1cebfea6f79881c588ccd1b0781e49e3f (patch) | |
tree | 36d29e3f83661c4f5f45b6f74ac0d5f9886867a8 /drivers/scsi/scsi.c | |
parent | 36b35a5be0e4b406acd816e2122d153e875105be (diff) | |
parent | 4f5537de7c1531398e84e18a24f667e49cc94208 (diff) | |
download | kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.zip kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.tar.gz kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.tar.bz2 |
Merge branch 'master' into upstream
Diffstat (limited to 'drivers/scsi/scsi.c')
-rw-r--r-- | drivers/scsi/scsi.c | 58 |
1 files changed, 42 insertions, 16 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index b332cad..c51b576 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -96,24 +96,40 @@ unsigned int scsi_logging_level; EXPORT_SYMBOL(scsi_logging_level); #endif -const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE] = { - "Direct-Access ", - "Sequential-Access", +static const char *const scsi_device_types[] = { + "Direct access ", + "Sequential access", "Printer ", "Processor ", "WORM ", - "CD-ROM ", + "CD/DVD ", "Scanner ", - "Optical Device ", - "Medium Changer ", + "Optical memory ", + "Media changer ", "Communications ", - "Unknown ", - "Unknown ", + "ASC IT8 ", + "ASC IT8 ", "RAID ", "Enclosure ", - "Direct-Access-RBC", + "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 +851,14 @@ 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 +873,14 @@ 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 +1122,8 @@ 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 +1144,7 @@ cleanup_queue: static void __exit exit_scsi(void) { + scsi_netlink_exit(); scsi_sysfs_unregister(); scsi_exit_sysctl(); scsi_exit_hosts(); |