c68c8910e8
TRCSTALLCTLR register is only implemented if TRCIDR3.STALLCTL == 0b1 Make sure the driver touches the register only it is implemented. Bug: 174685394 Link: https://lore.kernel.org/r/20210127184617.3684379-1-suzuki.poulose@arm.com Cc: stable@vger.kernel.org Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Leo Yan <leo.yan@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Link: https://lore.kernel.org/r/20210201181351.1475223-32-mathieu.poirier@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> (cherry picked from commit f72896063396b0cb205cbf0fd76ec6ab3ca11c8a) Signed-off-by: Qais Yousef <qais.yousef@arm.com> Change-Id: I9f8fb2fa937246e3380f31676c67be7a76cc1d15