diff options
| author |   Marc Zyngier <maz@kernel.org> | 2021-10-17 13:42:10 +0100 |
|---|---|---|
| committer |   Daniel Lezcano <daniel.lezcano@linaro.org> | 2021-10-17 21:46:50 +0200 |
| commit | d72689988d67d56aebf7afb7f609373ea6b548db (patch) | |
| tree | 438361892dd5d1b5b9b72027176f6d5014bb0959 /arch/arm/include | |
| parent | clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses (diff) | |
| download | linux-dev-d72689988d67d56aebf7afb7f609373ea6b548db.tar.xz linux-dev-d72689988d67d56aebf7afb7f609373ea6b548db.zip | |
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/arm/include')
| -rw-r--r-- | arch/arm/include/asm/arch_timer.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/arm/include/asm/arch_timer.h b/arch/arm/include/asm/arch_timer.h index a5d27cff28fa..7d757085c61a 100644 --- a/arch/arm/include/asm/arch_timer.h +++ b/arch/arm/include/asm/arch_timer.h @@ -65,9 +65,6 @@ u32 arch_timer_reg_read_cp15(int access, enum arch_timer_reg reg) case ARCH_TIMER_REG_CTRL: asm volatile("mrc p15, 0, %0, c14, c2, 1" : "=r" (val)); break; - case ARCH_TIMER_REG_TVAL: - asm volatile("mrc p15, 0, %0, c14, c2, 0" : "=r" (val)); - break; default: BUILD_BUG(); } @@ -76,9 +73,6 @@ u32 arch_timer_reg_read_cp15(int access, enum arch_timer_reg reg) case ARCH_TIMER_REG_CTRL: asm volatile("mrc p15, 0, %0, c14, c3, 1" : "=r" (val)); break; - case ARCH_TIMER_REG_TVAL: - asm volatile("mrc p15, 0, %0, c14, c3, 0" : "=r" (val)); - break; default: BUILD_BUG(); } |