clocksource/drivers/arm_arch_timer: Drop CNT*_TVAL read accessors
mainline inclusion from mainline-v5.16-rc1 commit d7268998 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4QCBG CVE: NA ---------------------- 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: NOliver Upton <oupton@google.com> Reviewed-by: NMark Rutland <mark.rutland@arm.com> Tested-by: NMark Rutland <mark.rutland@arm.com> Signed-off-by: NMarc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20211017124225.3018098-3-maz@kernel.orgSigned-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: NXiongfeng Wang <wangxiongfeng2@huawei.com> Reviewed-by: NHanjun Guo <guohanjun@huawei.com> Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
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