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Commit cf7d3c8e authored by Philippe Skowronski's avatar Philippe Skowronski Committed by Greg Kroah-Hartman
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usb: langwell_udc: cancel pending requests when controller is suspended. 



It is safer to cancel pending requests before free dTD and dQH when
controller enters suspend state.

Signed-off-by: default avatarPhilippe Skowronski <philippe.skowronski@intel.com>
Signed-off-by: default avatarHao Wu <hao.wu@intel.com>
[Switch to spin_lock_irq as suggested by Alan Stern]
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent c8458d59

drivers/usb/gadget/langwell_udc.c

+5 −0
Original line number Diff line number Diff line
@@ -3391,6 +3391,11 @@ static int langwell_udc_suspend(struct pci_dev *pdev, pm_message_t state) 
	/* save PCI state */

	pci_save_state(pdev);



	spin_lock_irq(&dev->lock);

	/* stop all usb activities */

	stop_activity(dev, dev->driver);

	spin_unlock_irq(&dev->lock);



	/* free dTD dma_pool and dQH */

	if (dev->dtd_pool)

		dma_pool_destroy(dev->dtd_pool);