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authorHui Wang <hui.wang@canonical.com>2021-02-03 16:02:45 +0800
committerMarcel Holtmann <marcel@holtmann.org>2021-02-03 14:34:02 +0100
commit7bd9fb058d77213130e4b3e594115c028b708e7e (patch)
tree04fb8ba8bf87ffae192f2dee3f0a08739d23e658 /drivers/gnss/serial.c
parentb1810febda94cae09e1095d02fad3be00ce93b6d (diff)
Bluetooth: btusb: Fix the autosuspend enable and disable
I tried to disable the autosuspend on btusb through the module parameter enable_autosuspend, this parameter is set to N, but the usb bluetooth device is still runtime suspended. $ cat /sys/module/btusb/parameters/enable_autosuspend N $ cat /sys/bus/usb/devices/3-10/power/runtime_status suspended $ cat /sys/bus/usb/devices/3-10/power/runtime_suspended_time 65187 We already set ".supports_autosuspend = 1" in the usb_driver, this device will be set autosuspend enabled by usb core, we don't need to call usb_enable_autosuspend() in the btusb_probe(). Instead if users set the parameter enable_autosuspend to N, we need to call usb_disable_autosuspend() in the btusb_probe(). After this change and set the parameter to N, we could see the device is not runtime suspended anymore. $ cat /sys/module/btusb/parameters/enable_autosuspend N $ cat /sys/bus/usb/devices/3-10/power/runtime_status active $ cat /sys/bus/usb/devices/3-10/power/runtime_suspended_time 0 And if we disable the autosuspend in the btusb_probe(), we need to enable the autosuspend in the disconnect(), this could guarantee that the device could be runtime suspended after we rmmod the btusb. Signed-off-by: Hui Wang <hui.wang@canonical.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/gnss/serial.c')
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