Merge tag 'driver-core-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fix from Greg KH:
 "Here is a single driver core fix for 5.17-rc6. It resolves a reported
  problem when the DMA map of a device is not properly released.

  It has been in linux-next with no reported problems"

* tag 'driver-core-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: Free DMA range map when device is released

Author: torvalds

drivers/base/dd.c

@@ -629,6 +629,9 @@ static int really_probe(struct device *dev, struct device_driver *drv)
 			drv->remove(dev);
 
 		devres_release_all(dev);
+		arch_teardown_dma_ops(dev);
+		kfree(dev->dma_range_map);
+		dev->dma_range_map = NULL;
 		driver_sysfs_remove(dev);
 		dev->driver = NULL;
 		dev_set_drvdata(dev, NULL);
@@ -1209,6 +1212,8 @@ static void __device_release_driver(struct device *dev, struct device *parent)
 
 		devres_release_all(dev);
 		arch_teardown_dma_ops(dev);
+		kfree(dev->dma_range_map);
+		dev->dma_range_map = NULL;
 		dev->driver = NULL;
 		dev_set_drvdata(dev, NULL);
 		if (dev->pm_domain && dev->pm_domain->dismiss)