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scsi: serialize ->rescan against ->remove

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Lock the device embedded in the scsi_device to protect against
concurrent calls to ->remove.

Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Alan Stern <[email protected]>
Reviewed-by: Paolo Bonzini <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Christoph Hellwig authored and James Bottomley committed 2015-03-19 06:38:43 -07:00
1 parent 4e5a800c82
commit e27829dc92
1 file changed
+3 -4
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drivers/scsi/scsi_scan.c
+3 -4
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@@ -1570,16 +1570,15 @@ 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);