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Compatibility with old vanilla kernels (#88)

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This commit is contained in:
Frank Zhang
2022-05-24 21:05:49 +08:00
committed by GitHub
parent 628d25cb87
commit d722c3fff7
1 changed files with 6 additions and 3 deletions
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9
kvmd/apps/otg/__init__.py
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@@ -78,8 +78,11 @@ def _unlink(path: str, optional: bool=False) -> None:
os.unlink(path) os.unlink(path)
def _write(path: str, value: Union[str, int]) -> None: def _write(path: str, value: Union[str, int], optional: bool=False) -> None:
get_logger().info("WRITE --- %s", path) get_logger().info("WRITE --- %s", path)
if optional and not os.access(path, os.F_OK):
get_logger().info("SKIP ---- %s", path)
return
with open(path, "w") as param_file: with open(path, "w") as param_file:
param_file.write(str(value)) param_file.write(str(value))
@@ -158,9 +161,9 @@ class _GadgetConfig:
func = f"hid.usb{self.__hid_instance}" func = f"hid.usb{self.__hid_instance}"
func_path = join(self.__gadget_path, "functions", func) func_path = join(self.__gadget_path, "functions", func)
_mkdir(func_path) _mkdir(func_path)
_write(join(func_path, "no_out_endpoint"), "1") _write(join(func_path, "no_out_endpoint"), "1", optional=True)
if remote_wakeup: if remote_wakeup:
_write(join(func_path, "wakeup_on_write"), "1") _write(join(func_path, "wakeup_on_write"), "1", optional=True)
_write(join(func_path, "protocol"), hid.protocol) _write(join(func_path, "protocol"), hid.protocol)
_write(join(func_path, "subclass"), hid.subclass) _write(join(func_path, "subclass"), hid.subclass)
_write(join(func_path, "report_length"), hid.report_length) _write(join(func_path, "report_length"), hid.report_length)