Hi linux-bluetooth, This patch series prepares the Bluetooth controller for system suspend by disconnecting all devices and preparing the event filter and LE whitelist with devices that can wake the system from suspend. The main motivation for doing this is so we can enable Bluetooth as a wake up source during suspend without it being noisy. Bluetooth should wake the system when a HID device receives user input but otherwise not send any events to the host. This patch series was tested on several Chromebooks with both btusb and hci_serdev on kernel 4.19. The set of tests was basically the following: * Reconnects after suspend succeed * HID devices can wake the system from suspend (needs some related bluez changes to call the Set Wake Capable management command) * System properly pauses and unpauses discovery + advertising around suspend * System does not wake from any events from non wakeable devices Series 2 has refactored the change into multiple smaller commits as requested. I tried to simplify some of the whitelist filtering edge cases but unfortunately it remains quite complex. Please review and provide any feedback. Thanks Abhishek Changes in v2: * Moved pm notifier registration into its own patch and moved params out of separate suspend_state * Refactored filters and whitelist settings to its own patch * Refactored update_white_list to have clearer edge cases * Add connected devices to whitelist (previously missing corner case) * Refactored pause discovery + advertising into its own patch Abhishek Pandit-Subedi (4): Bluetooth: Add mgmt op set_wake_capable Bluetooth: Handle PM_SUSPEND_PREPARE and PM_POST_SUSPEND Bluetooth: Update filters/whitelists for suspend Bluetooth: Pause discovery and advertising during suspend include/net/bluetooth/hci.h | 17 +- include/net/bluetooth/hci_core.h | 38 ++++ include/net/bluetooth/mgmt.h | 7 + net/bluetooth/hci_core.c | 71 ++++++ net/bluetooth/hci_event.c | 28 ++- net/bluetooth/hci_request.c | 370 ++++++++++++++++++++++++++----- net/bluetooth/hci_request.h | 2 + net/bluetooth/mgmt.c | 89 ++++++++ 8 files changed, 554 insertions(+), 68 deletions(-) -- 2.25.0.341.g760bfbb309-goog
