Messages in this thread Patch in this message | | | From | abhijeet.kumar@intel ... | Subject | [PATCH] Bluettoth: btusb: Prevent USB devices to autosuspend while setting interface | Date | Wed, 15 Nov 2017 17:41:28 +0530 |
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From: Abhijeet Kumar <abhijeet.kumar@intel.com>
Runtime resume USB device in order to ensure that PM framework knows that the we might be using the device in a short time and doesn't autosuspend the device while we update it's interface.
Signed-off-by: Abhijeet Kumar <abhijeet.kumar@intel.com> --- drivers/bluetooth/btusb.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 7a5c06aaa181..588aabf991be 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -1444,6 +1444,12 @@ static void btusb_work(struct work_struct *work) data->sco_skb = NULL; spin_unlock_irqrestore(&data->rxlock, flags); + /* + *Letting runtime PM know that we wish to use + *the device in a short time. + */ + pm_runtime_get(&data->udev->dev); + if (__set_isoc_interface(hdev, new_alts) < 0) return; } -- 1.9.1
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