]> www.pilppa.org Git - linux-2.6-omap-h63xx.git/blobdiff - drivers/scsi/scsi_sysfs.c
[SCSI] fix intermittent oops in scsi_bus_uevent
[linux-2.6-omap-h63xx.git] / drivers / scsi / scsi_sysfs.c
index 67bb20ed45d23ef431280a2c63a03e14ea252731..93d2b6714453e6ae7e11f1cd2e3b864182f7d66d 100644 (file)
@@ -21,6 +21,8 @@
 #include "scsi_priv.h"
 #include "scsi_logging.h"
 
+static struct device_type scsi_dev_type;
+
 static const struct {
        enum scsi_device_state  value;
        char                    *name;
@@ -249,18 +251,27 @@ shost_rd_attr(sg_tablesize, "%hu\n");
 shost_rd_attr(unchecked_isa_dma, "%d\n");
 shost_rd_attr2(proc_name, hostt->proc_name, "%s\n");
 
-static struct device_attribute *scsi_sysfs_shost_attrs[] = {
-       &dev_attr_unique_id,
-       &dev_attr_host_busy,
-       &dev_attr_cmd_per_lun,
-       &dev_attr_can_queue,
-       &dev_attr_sg_tablesize,
-       &dev_attr_unchecked_isa_dma,
-       &dev_attr_proc_name,
-       &dev_attr_scan,
-       &dev_attr_hstate,
-       &dev_attr_supported_mode,
-       &dev_attr_active_mode,
+static struct attribute *scsi_sysfs_shost_attrs[] = {
+       &dev_attr_unique_id.attr,
+       &dev_attr_host_busy.attr,
+       &dev_attr_cmd_per_lun.attr,
+       &dev_attr_can_queue.attr,
+       &dev_attr_sg_tablesize.attr,
+       &dev_attr_unchecked_isa_dma.attr,
+       &dev_attr_proc_name.attr,
+       &dev_attr_scan.attr,
+       &dev_attr_hstate.attr,
+       &dev_attr_supported_mode.attr,
+       &dev_attr_active_mode.attr,
+       NULL
+};
+
+struct attribute_group scsi_shost_attr_group = {
+       .attrs =        scsi_sysfs_shost_attrs,
+};
+
+struct attribute_group *scsi_sysfs_shost_attr_groups[] = {
+       &scsi_shost_attr_group,
        NULL
 };
 
@@ -335,7 +346,12 @@ static struct class sdev_class = {
 /* all probing is done in the individual ->probe routines */
 static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
 {
-       struct scsi_device *sdp = to_scsi_device(dev);
+       struct scsi_device *sdp;
+
+       if (dev->type != &scsi_dev_type)
+               return 0;
+
+       sdp = to_scsi_device(dev);
        if (sdp->no_uld_attach)
                return 0;
        return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0;
@@ -343,7 +359,12 @@ static int scsi_bus_match(struct device *dev, struct device_driver *gendrv)
 
 static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
-       struct scsi_device *sdev = to_scsi_device(dev);
+       struct scsi_device *sdev;
+
+       if (dev->type != &scsi_dev_type)
+               return 0;
+
+       sdev = to_scsi_device(dev);
 
        add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type);
        return 0;
@@ -351,10 +372,16 @@ static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
 
 static int scsi_bus_suspend(struct device * dev, pm_message_t state)
 {
-       struct device_driver *drv = dev->driver;
-       struct scsi_device *sdev = to_scsi_device(dev);
+       struct device_driver *drv;
+       struct scsi_device *sdev;
        int err;
 
+       if (dev->type != &scsi_dev_type)
+               return 0;
+
+       drv = dev->driver;
+       sdev = to_scsi_device(dev);
+
        err = scsi_device_quiesce(sdev);
        if (err)
                return err;
@@ -370,10 +397,16 @@ static int scsi_bus_suspend(struct device * dev, pm_message_t state)
 
 static int scsi_bus_resume(struct device * dev)
 {
-       struct device_driver *drv = dev->driver;
-       struct scsi_device *sdev = to_scsi_device(dev);
+       struct device_driver *drv;
+       struct scsi_device *sdev;
        int err = 0;
 
+       if (dev->type != &scsi_dev_type)
+               return 0;
+
+       drv = dev->driver;
+       sdev = to_scsi_device(dev);
+
        if (drv && drv->resume)
                err = drv->resume(dev);
 
@@ -781,6 +814,27 @@ sdev_store_queue_type_rw(struct device *dev, struct device_attribute *attr,
        return count;
 }
 
+static int scsi_target_add(struct scsi_target *starget)
+{
+       int error;
+
+       if (starget->state != STARGET_CREATED)
+               return 0;
+
+       error = device_add(&starget->dev);
+       if (error) {
+               dev_err(&starget->dev, "target device_add failed, error %d\n", error);
+               get_device(&starget->dev);
+               scsi_target_reap(starget);
+               put_device(&starget->dev);
+               return error;
+       }
+       transport_add_device(&starget->dev);
+       starget->state = STARGET_RUNNING;
+
+       return 0;
+}
+
 static struct device_attribute sdev_attr_queue_type_rw =
        __ATTR(queue_type, S_IRUGO | S_IWUSR, show_queue_type_field,
               sdev_store_queue_type_rw);
@@ -796,10 +850,16 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
 {
        int error, i;
        struct request_queue *rq = sdev->request_queue;
+       struct scsi_target *starget = sdev->sdev_target;
 
        if ((error = scsi_device_set_state(sdev, SDEV_RUNNING)) != 0)
                return error;
 
+       error = scsi_target_add(starget);
+       if (error)
+               return error;
+
+       transport_configure_device(&starget->dev);
        error = device_add(&sdev->sdev_gendev);
        if (error) {
                put_device(sdev->sdev_gendev.parent);
@@ -834,7 +894,7 @@ int scsi_sysfs_add_sdev(struct scsi_device *sdev)
                goto out;
        }
 
-       error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL);
+       error = bsg_register_queue(rq, &sdev->sdev_gendev, NULL, NULL);
 
        if (error)
                sdev_printk(KERN_INFO, sdev,
@@ -971,44 +1031,6 @@ int scsi_register_interface(struct class_interface *intf)
 }
 EXPORT_SYMBOL(scsi_register_interface);
 
-
-static struct device_attribute *class_attr_overridden(
-               struct device_attribute **attrs,
-               struct device_attribute *attr)
-{
-       int i;
-
-       if (!attrs)
-               return NULL;
-       for (i = 0; attrs[i]; i++)
-               if (!strcmp(attrs[i]->attr.name, attr->attr.name))
-                       return attrs[i];
-       return NULL;
-}
-
-static int class_attr_add(struct device *classdev,
-               struct device_attribute *attr)
-{
-       struct device_attribute *base_attr;
-
-       /*
-        * Spare the caller from having to copy things it's not interested in.
-        */
-       base_attr = class_attr_overridden(scsi_sysfs_shost_attrs, attr);
-       if (base_attr) {
-               /* extend permissions */
-               attr->attr.mode |= base_attr->attr.mode;
-
-               /* override null show/store with default */
-               if (!attr->show)
-                       attr->show = base_attr->show;
-               if (!attr->store)
-                       attr->store = base_attr->store;
-       }
-
-       return device_create_file(classdev, attr);
-}
-
 /**
  * scsi_sysfs_add_host - add scsi host to subsystem
  * @shost:     scsi host struct to add to subsystem
@@ -1018,20 +1040,11 @@ int scsi_sysfs_add_host(struct Scsi_Host *shost)
 {
        int error, i;
 
+       /* add host specific attributes */
        if (shost->hostt->shost_attrs) {
                for (i = 0; shost->hostt->shost_attrs[i]; i++) {
-                       error = class_attr_add(&shost->shost_dev,
-                                       shost->hostt->shost_attrs[i]);
-                       if (error)
-                               return error;
-               }
-       }
-
-       for (i = 0; scsi_sysfs_shost_attrs[i]; i++) {
-               if (!class_attr_overridden(shost->hostt->shost_attrs,
-                                       scsi_sysfs_shost_attrs[i])) {
                        error = device_create_file(&shost->shost_dev,
-                                       scsi_sysfs_shost_attrs[i]);
+                                       shost->hostt->shost_attrs[i]);
                        if (error)
                                return error;
                }