| Message ID | 20240702145248.47184-1-krzysztof.kozlowski@linaro.org |
|---|---|
| State | Accepted |
| Commit | 97e32381d0fc6c2602a767b0c46e15eb2b75971d |
| Headers | show |
| Series | [v2] dt-bindings: thermal: correct thermal zone node name limit | expand |
diff --git a/Documentation/devicetree/bindings/thermal/thermal-zones.yaml b/Documentation/devicetree/bindings/thermal/thermal-zones.yaml index 68398e7e8655..606b80965a44 100644 --- a/Documentation/devicetree/bindings/thermal/thermal-zones.yaml +++ b/Documentation/devicetree/bindings/thermal/thermal-zones.yaml @@ -49,7 +49,10 @@ properties: to take when the temperature crosses those thresholds. patternProperties: - "^[a-zA-Z][a-zA-Z0-9\\-]{1,12}-thermal$": + # Node name is limited in size due to Linux kernel requirements - 19 + # characters in total (see THERMAL_NAME_LENGTH, including terminating NUL + # byte): + "^[a-zA-Z][a-zA-Z0-9\\-]{1,10}-thermal$": type: object description: Each thermal zone node contains information about how frequently it
Linux kernel uses thermal zone node name during registering thermal zones and has a hard-coded limit of 20 characters, including terminating NUL byte. The bindings expect node names to finish with '-thermal' which is eight bytes long, thus we have only 11 characters for the reset of the node name (thus 10 for the pattern after leading fixed character). Reported-by: Rob Herring <robh@kernel.org> Closes: https://lore.kernel.org/all/CAL_JsqKogbT_4DPd1n94xqeHaU_J8ve5K09WOyVsRX3jxxUW3w@mail.gmail.com/ Fixes: 1202a442a31f ("dt-bindings: thermal: Add yaml bindings for thermal zones") Cc: <stable@vger.kernel.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- Changes in v2: 1. Shorten the pattern and mention source of size requirement (Rob). --- Documentation/devicetree/bindings/thermal/thermal-zones.yaml | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)