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Clang and GCC complain about overlapped initialisers in the hrtimer_clock_to_base_table definition. With `make W=1` and CONFIG_WERROR=y (which is default nowadays) this breaks the build: CC kernel/time/hrtimer.o kernel/time/hrtimer.c:124:21: error: initializer overrides prior initialization of this subobject [-Werror,-Winitializer-overrides] 124 | [CLOCK_REALTIME] = HRTIMER_BASE_REALTIME, kernel/time/hrtimer.c:122:27: note: previous initialization is here 122 | [0 ... MAX_CLOCKS - 1] = HRTIMER_MAX_CLOCK_BASES, (and similar for CLOCK_MONOTONIC, CLOCK_BOOTTIME, and CLOCK_TAI). hrtimer_clockid_to_base(), which uses the table, is only used in __hrtimer_init(), which is not a hotpath. Therefore replace the table lookup with a switch case in hrtimer_clockid_to_base() to avoid this warning. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250214134424.3367619-1-andriy.shevchenko@linux.intel.com