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Commit 74b0783b authored by Deva Ramasubramanian's avatar Deva Ramasubramanian Committed by Shivaraj Shetty
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switch: Reset device's drvdata before destroying it 



dev_set_drvdata() sets the device specific driver data at
dev->p->driver_data.  However, dev is destroyed and has it's
context memory freed in device_destroy().  As a result, calling
dev_set_drvdata() causes a fault when accessing dev->p.

CRs-Fixed: 449732
Change-Id: I4b1e6d17db52d0e31caf9b52e59979ff9cbb0c12
Signed-off-by: default avatarDeva Ramasubramanian <dramasub@codeaurora.org>
Signed-off-by: default avatarShivaraj Shetty <shivaraj@codeaurora.org>
parent cc0af699

drivers/switch/switch_class.c

+1 −1
Original line number Diff line number Diff line
@@ -151,8 +151,8 @@ void switch_dev_unregister(struct switch_dev *sdev) 
{

	device_remove_file(sdev->dev, &dev_attr_name);

	device_remove_file(sdev->dev, &dev_attr_state);

	device_destroy(switch_class, MKDEV(0, sdev->index));

	dev_set_drvdata(sdev->dev, NULL);

	device_destroy(switch_class, MKDEV(0, sdev->index));

}

EXPORT_SYMBOL_GPL(switch_dev_unregister);