Linux-USB Archive on lore.kernel.org
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* [PATCH 0/2] Reset realtek bluetooth devices during user suspend
@ 2019-09-17 21:27 Abhishek Pandit-Subedi
  2019-09-17 21:27 ` [PATCH 1/2] usb: support suspend_noirq Abhishek Pandit-Subedi
                   ` (3 more replies)
  0 siblings, 4 replies; 10+ messages in thread
From: Abhishek Pandit-Subedi @ 2019-09-17 21:27 UTC (permalink / raw)
  To: linux-bluetooth, linux-usb
  Cc: dianders, Abhishek Pandit-Subedi, Kai-Heng Feng, Alan Stern,
	Hui Peng, linux-pm, Johan Hedberg, Suzuki K Poulose, Mark Brown,
	Rafael J. Wysocki, Wolfram Sang, linux-kernel, Marcel Holtmann,
	Len Brown, Mathias Payer, Dmitry Torokhov, Greg Kroah-Hartman,
	Mans Rullgard, Pavel Machek, YueHaibing


On a Realtek USB bluetooth device, I wanted a simple and consistent way
to put the device in reset during suspend (2 reasons: to save power and
disable BT as a wakeup source). Resetting it in the suspend callback
causes a detach and the resume callback is not called. Hence the changes
in this series to do the reset in suspend_noirq.

I looked into using PERSIST and reset on resume but those seem mainly
for misbehaving devices that reset themselves.

This patch series has been tested with Realtek BT hardware as well as
Intel BT (test procedure = disable as wake source, user suspend and
observe a detach + reattach on resume).



Abhishek Pandit-Subedi (2):
  usb: support suspend_noirq
  Bluetooth: btusb: Reset realtek devices on user suspend

 drivers/bluetooth/btusb.c | 26 ++++++++++++++++++
 drivers/usb/core/driver.c | 56 +++++++++++++++++++++++++++++++++++++++
 drivers/usb/core/usb.c    |  6 +++++
 include/linux/pm.h        |  8 ++++++
 include/linux/usb.h       |  3 +++
 5 files changed, 99 insertions(+)

-- 
2.23.0.237.gc6a4ce50a0-goog


^ permalink raw reply	[flat|nested] 10+ messages in thread

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Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-09-17 21:27 [PATCH 0/2] Reset realtek bluetooth devices during user suspend Abhishek Pandit-Subedi
2019-09-17 21:27 ` [PATCH 1/2] usb: support suspend_noirq Abhishek Pandit-Subedi
2019-10-04 11:58   ` Greg Kroah-Hartman
2019-09-17 21:27 ` [PATCH 2/2] Bluetooth: btusb: Reset realtek devices on user suspend Abhishek Pandit-Subedi
2019-10-04 11:59   ` Greg KH
2019-09-18 14:23 ` [PATCH 0/2] Reset realtek bluetooth devices during " Alan Stern
2019-09-18 17:19   ` Abhishek Pandit-Subedi
2019-09-18 18:51     ` Alan Stern
2019-09-26 20:51       ` Abhishek Pandit-Subedi
2019-09-18 14:41 ` Oliver Neukum

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