regIH_MSI_STORM_CTRL
tmp = RREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL);
WREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL, tmp);
tmp = RREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL);
WREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL, tmp);
tmp = RREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL);
WREG32_SOC15(OSSSYS, 0, regIH_MSI_STORM_CTRL, tmp);