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a724a5f4f4
Fix violations of MISRA C:2012 Rule 10.4 (operand of unsigned and signed) in cancellation point handling code. Changed all CANCEL_FLAG_* macro definitions and their usage to use unsigned literals (1u instead of 1) to ensure consistent unsigned arithmetic when performing bitwise operations. This eliminates mixed signed/unsigned operand violations in: - CANCEL_FLAG_NONCANCELABLE - CANCEL_FLAG_CANCEL_ASYNC - CANCEL_FLAG_CANCEL_PENDING The changes affect cancellation point entry/exit logic, cancellation state management, and cancellation type handling across both kernel and libc implementations. Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>