some fixes

python_app/hardware_full/switch_drivers/gpio_uapi.py

@@ -180,9 +180,12 @@ class GpioOutputLines:
         self._line_fd = int(request.fd)
 
     def close(self) -> None:
-        """Close line request and chip file descriptors."""
-        self._close_line_fd()
-        self._close_chip_fd()
+        """Close line request and chip file descriptors (best-effort, idempotent)."""
+        try:
+            self._close_line_fd()
+        finally:
+            # Ensure the chip fd is always closed even if closing the line fd raised.
+            self._close_chip_fd()
 
     def set_values(self, values: Sequence[int]) -> None:
         """Apply output values for all requested lines."""
@@ -212,16 +215,22 @@ class GpioOutputLines:
             raise RuntimeError(f"Failed to set GPIO output values: {exc}") from exc
 
     def _close_line_fd(self) -> None:
-        """Close line file descriptor if currently open."""
+        """Close line file descriptor if currently open (best-effort, idempotent)."""
         if self._line_fd >= 0:
-            os.close(self._line_fd)
-            self._line_fd = -1
+            try:
+                os.close(self._line_fd)
+            finally:
+                # Always clear the fd so close() stays idempotent even if os.close raised.
+                self._line_fd = -1
 
     def _close_chip_fd(self) -> None:
-        """Close chip file descriptor if currently open."""
+        """Close chip file descriptor if currently open (best-effort, idempotent)."""
         if self._chip_fd >= 0:
-            os.close(self._chip_fd)
-            self._chip_fd = -1
+            try:
+                os.close(self._chip_fd)
+            finally:
+                # Always clear the fd so close() stays idempotent even if os.close raised.
+                self._chip_fd = -1
 
 
 class GpioLineEventWatcher:
@@ -316,18 +325,27 @@ class GpioLineEventWatcher:
         return int(event.id)
 
     def close(self) -> None:
-        """Close line request and chip file descriptors."""
-        self._close_line_fd()
-        self._close_chip_fd()
+        """Close line request and chip file descriptors (best-effort, idempotent)."""
+        try:
+            self._close_line_fd()
+        finally:
+            # Ensure the chip fd is always closed even if closing the line fd raised.
+            self._close_chip_fd()
 
     def _close_line_fd(self) -> None:
-        """Close line file descriptor if currently open."""
+        """Close line file descriptor if currently open (best-effort, idempotent)."""
         if self._line_fd >= 0:
-            os.close(self._line_fd)
-            self._line_fd = -1
+            try:
+                os.close(self._line_fd)
+            finally:
+                # Always clear the fd so close() stays idempotent even if os.close raised.
+                self._line_fd = -1
 
     def _close_chip_fd(self) -> None:
-        """Close chip file descriptor if currently open."""
+        """Close chip file descriptor if currently open (best-effort, idempotent)."""
         if self._chip_fd >= 0:
-            os.close(self._chip_fd)
-            self._chip_fd = -1
+            try:
+                os.close(self._chip_fd)
+            finally:
+                # Always clear the fd so close() stays idempotent even if os.close raised.
+                self._chip_fd = -1