We have read/modify write helpers for updating bitfields in sysregs if they have changed but we do not have them for updating the whole register. Define sysreg_cond_update() for that.
Signed-off-by: Mark Brown <[email protected]> --- arch/arm64/include/asm/sysreg.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 7aa08d59d494..4b96449e0ffa 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -1235,6 +1235,12 @@ write_sysreg_s(__scs_new, sysreg); \ } while (0) +#define sysreg_cond_update(sysreg, val) \ + sysreg_clear_set(sysreg, ~0UL, val) + +#define sysreg_cond_update_s(sysreg, val) \ + sysreg_clear_set_s(sysreg, ~0UL, val) + #define write_sysreg_hcr(__val) do { \ if (IS_ENABLED(CONFIG_AMPERE_ERRATUM_AC04_CPU_23) && \ (!system_capabilities_finalized() || \ -- 2.47.3
