From 5fc675643bcacce1c7be800ee97dc45e4115e9f7 Mon Sep 17 00:00:00 2001
From: Bibek <bibekmhj7426@gmail.com>
Date: Fri, 15 May 2026 21:46:34 -0400
Subject: [PATCH] Fix pyserial read_all return type

---
 stubs/pyserial/serial/serialutil.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stubs/pyserial/serial/serialutil.pyi b/stubs/pyserial/serial/serialutil.pyi
index 3b6f84adee50..dbd5f05c3f6b 100644
--- a/stubs/pyserial/serial/serialutil.pyi
+++ b/stubs/pyserial/serial/serialutil.pyi
@@ -147,6 +147,6 @@ class SerialBase(io.RawIOBase):
     def apply_settings(self, d: dict[str, Any]) -> None: ...
     def readinto(self, buffer: WriteableBuffer, /) -> int: ...  # returns int unlike `io.RawIOBase`
     def send_break(self, duration: float = 0.25) -> None: ...
-    def read_all(self) -> bytes | None: ...
+    def read_all(self) -> bytes: ...
     def read_until(self, expected: bytes = b"\n", size: int | None = None) -> bytes: ...
     def iread_until(self, expected: bytes = ..., size: int | None = ...) -> Generator[bytes]: ...