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669c461423
If TMC ETR is enabled without being ready, in later use we may see AXI bus errors caused by accessing invalid addresses. Signed-off-by: Yabin Cui <yabinc@google.com> [ Tweak error message ] Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20230127231001.1920947-1-yabinc@google.com