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Andrew Goodbody <andrew.goodbody@linaro.org> says: The function clk_get_rate() returns a ulong with 0 meaning an invalid clock rate and also negative error codes being returned for other errors. But being an unsigned return value this cannot simply be tested for with a < 0 test. Instead use the IS_ERR_VALUE() macro to check for negative errors appearing as very large positive values. Fix those places that test for <= 0. Also fix some places checking the return of clk_register() that incorrectly used ERR_PTR(). Link: https://lore.kernel.org/r/20251021-clk_funcs-v1-0-acf51a40eea7@linaro.org