diff options
| -rw-r--r-- | hwdb.d/60-autosuspend.hwdb | 7 | ||||
| -rwxr-xr-x | hwdb.d/parse_hwdb.py | 1 | ||||
| -rw-r--r-- | rules.d/60-autosuspend.rules | 4 |
3 files changed, 12 insertions, 0 deletions
diff --git a/hwdb.d/60-autosuspend.hwdb b/hwdb.d/60-autosuspend.hwdb index 15dcc2f1ee..e9304f440d 100644 --- a/hwdb.d/60-autosuspend.hwdb +++ b/hwdb.d/60-autosuspend.hwdb @@ -24,6 +24,13 @@ # # Allowed properties are: # ID_AUTOSUSPEND=1 +# ID_PERSIST=0 +# +# ID_PERSIST=0 allows disabling the kernels USB "persist" feature, which allows +# the continued use of devices after a power loss (due to suspend). Disable it +# if the device will loose state without a USB power session and the driver +# is unable to recover the state when resuming. See +# https://www.kernel.org/doc/html/latest/driver-api/usb/persist.html # Sort by brand, model diff --git a/hwdb.d/parse_hwdb.py b/hwdb.d/parse_hwdb.py index dea71acfe9..f385e52628 100755 --- a/hwdb.d/parse_hwdb.py +++ b/hwdb.d/parse_hwdb.py @@ -134,6 +134,7 @@ def property_grammar(): ('MOUSE_WHEEL_CLICK_COUNT', INTEGER), ('MOUSE_WHEEL_CLICK_COUNT_HORIZONTAL', INTEGER), ('ID_AUTOSUSPEND', Or((Literal('0'), Literal('1')))), + ('ID_PERSIST', Or((Literal('0'), Literal('1')))), ('ID_INPUT', Or((Literal('0'), Literal('1')))), ('ID_INPUT_ACCELEROMETER', Or((Literal('0'), Literal('1')))), ('ID_INPUT_JOYSTICK', Or((Literal('0'), Literal('1')))), diff --git a/rules.d/60-autosuspend.rules b/rules.d/60-autosuspend.rules index 1f9ebef631..332d052caa 100644 --- a/rules.d/60-autosuspend.rules +++ b/rules.d/60-autosuspend.rules @@ -11,4 +11,8 @@ SUBSYSTEM=="i2c", ATTR{name}=="cyapa", \ ENV{ID_AUTOSUSPEND}=="1", TEST=="power/control", \ ATTR{power/control}="auto" +# Disable USB persist if hwdb says so. +ENV{ID_PERSIST}=="0", TEST=="power/persist", \ + ATTR{power/persist}="0" + LABEL="autosuspend_end" |