diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-10-17 15:42:10 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2021-10-17 22:46:50 +0300 |
| commit | d72689988d67d56aebf7afb7f609373ea6b548db (patch) | |
| tree | 438361892dd5d1b5b9b72027176f6d5014bb0959 /arch/arm64/include/asm/arch_timer.h | |
| parent | 4775bc63f880001ee4fbd6456b12ab04674149e3 (diff) | |
| download | linux-d72689988d67d56aebf7afb7f609373ea6b548db.tar.xz | |
clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors
The arch timer driver never reads the various TVAL registers, only
writes to them. It is thus pointless to provide accessors
for them and to implement errata workarounds.
Drop these read-side accessors, and add a couple of BUG() statements
for the time being. These statements will be removed further down
the line.
Reviewed-by: Oliver Upton <oupton@google.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211017124225.3018098-3-maz@kernel.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'arch/arm64/include/asm/arch_timer.h')
| -rw-r--r-- | arch/arm64/include/asm/arch_timer.h | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/arch/arm64/include/asm/arch_timer.h b/arch/arm64/include/asm/arch_timer.h index fa12ea4a9812..8332fcfb08e8 100644 --- a/arch/arm64/include/asm/arch_timer.h +++ b/arch/arm64/include/asm/arch_timer.h @@ -52,8 +52,6 @@ struct arch_timer_erratum_workaround { enum arch_timer_erratum_match_type match_type; const void *id; const char *desc; - u32 (*read_cntp_tval_el0)(void); - u32 (*read_cntv_tval_el0)(void); u64 (*read_cntpct_el0)(void); u64 (*read_cntvct_el0)(void); int (*set_next_event_phys)(unsigned long, struct clock_event_device *); @@ -64,17 +62,6 @@ struct arch_timer_erratum_workaround { DECLARE_PER_CPU(const struct arch_timer_erratum_workaround *, timer_unstable_counter_workaround); -/* inline sysreg accessors that make erratum_handler() work */ -static inline notrace u32 arch_timer_read_cntp_tval_el0(void) -{ - return read_sysreg(cntp_tval_el0); -} - -static inline notrace u32 arch_timer_read_cntv_tval_el0(void) -{ - return read_sysreg(cntv_tval_el0); -} - static inline notrace u64 arch_timer_read_cntpct_el0(void) { return read_sysreg(cntpct_el0); @@ -140,8 +127,6 @@ u32 arch_timer_reg_read_cp15(int access, enum arch_timer_reg reg) switch (reg) { case ARCH_TIMER_REG_CTRL: return read_sysreg(cntp_ctl_el0); - case ARCH_TIMER_REG_TVAL: - return arch_timer_reg_read_stable(cntp_tval_el0); default: BUILD_BUG(); } @@ -149,8 +134,6 @@ u32 arch_timer_reg_read_cp15(int access, enum arch_timer_reg reg) switch (reg) { case ARCH_TIMER_REG_CTRL: return read_sysreg(cntv_ctl_el0); - case ARCH_TIMER_REG_TVAL: - return arch_timer_reg_read_stable(cntv_tval_el0); default: BUILD_BUG(); } |