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| author | Philippe Skowronski <philippe.skowronski@intel.com> | 2010-10-01 13:59:16 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 17:22:00 (GMT) |
| commit | cf7d3c8e579a643ff81ff95d51babdaf4c55f5f4 (patch) | |
| tree | c2890018e142e6f2f2da0dd73b6d21661b36ef1d | |
| parent | c8458d59d424fcba2456d6cba5811ce01c3aedb9 (diff) | |
| download | linux-fsl-qoriq-cf7d3c8e579a643ff81ff95d51babdaf4c55f5f4.tar.xz | |
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: Philippe Skowronski <philippe.skowronski@intel.com>
Signed-off-by: Hao Wu <hao.wu@intel.com>
[Switch to spin_lock_irq as suggested by Alan Stern]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | 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); |