Lock the device embedded in the scsi_device to protect against
concurrent calls to ->remove.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/scsi/scsi_scan.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 983aed1..523faee 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -1593,16 +1593,15 @@ EXPORT_SYMBOL(scsi_add_device);
void scsi_rescan_device(struct device *dev)
{
- if (!dev->driver)
- return;
-
- if (try_module_get(dev->driver->owner)) {
+ device_lock(dev);
+ if (dev->driver && try_module_get(dev->driver->owner)) {
struct scsi_driver *drv = to_scsi_driver(dev->driver);
if (drv->rescan)
drv->rescan(dev);
module_put(dev->driver->owner);
}
+ device_unlock(dev);
}
EXPORT_SYMBOL(scsi_rescan_device);
--
1.9.1
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