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Driver core fix for 5.17-rc6

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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.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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
This commit is contained in:
Linus Torvalds 2022-02-25 12:05:40 -08:00
commit d68ccfdbe5
1 changed files with 5 additions and 0 deletions
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5
drivers/base/dd.c
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@ -629,6 +629,9 @@ re_probe:
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)