From: Philippe Skowronski <philippe.skowronski@xxxxxxxxx> It is safer to cancel pending requests before free dTD and dQH when controller enters suspend state. Signed-off-by: Philippe Skowronski <philippe.skowronski@xxxxxxxxx> Signed-off-by: Hao Wu <hao.wu@xxxxxxxxx> [Switch to spin_lock_irq as suggested by Alan Stern] Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx> --- drivers/usb/gadget/langwell_udc.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c index 0643060..b8ec954 100644 --- a/drivers/usb/gadget/langwell_udc.c +++ b/drivers/usb/gadget/langwell_udc.c @@ -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); -- 1.7.2 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
