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path: root/drivers/scsi/scsi_sysfs.c
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Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
-rw-r--r--drivers/scsi/scsi_sysfs.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 64c96c7828ee..cc51f4756077 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -466,10 +466,10 @@ static void scsi_device_dev_release_usercontext(struct work_struct *work)
sdev->request_queue = NULL;
mutex_lock(&sdev->inquiry_mutex);
- rcu_swap_protected(sdev->vpd_pg80, vpd_pg80,
- lockdep_is_held(&sdev->inquiry_mutex));
- rcu_swap_protected(sdev->vpd_pg83, vpd_pg83,
- lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pg80 = rcu_replace_pointer(sdev->vpd_pg80, vpd_pg80,
+ lockdep_is_held(&sdev->inquiry_mutex));
+ vpd_pg83 = rcu_replace_pointer(sdev->vpd_pg83, vpd_pg83,
+ lockdep_is_held(&sdev->inquiry_mutex));
mutex_unlock(&sdev->inquiry_mutex);
if (vpd_pg83)
@@ -730,6 +730,14 @@ sdev_store_delete(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct kernfs_node *kn;
+ struct scsi_device *sdev = to_scsi_device(dev);
+
+ /*
+ * We need to try to get module, avoiding the module been removed
+ * during delete.
+ */
+ if (scsi_device_get(sdev))
+ return -ENODEV;
kn = sysfs_break_active_protection(&dev->kobj, &attr->attr);
WARN_ON_ONCE(!kn);
@@ -744,9 +752,10 @@ sdev_store_delete(struct device *dev, struct device_attribute *attr,
* state into SDEV_DEL.
*/
device_remove_file(dev, attr);
- scsi_remove_device(to_scsi_device(dev));
+ scsi_remove_device(sdev);
if (kn)
sysfs_unbreak_active_protection(kn);
+ scsi_device_put(sdev);
return count;
};
static DEVICE_ATTR(delete, S_IWUSR, NULL, sdev_store_delete);