Fixes linux_kselftest:timers_inconsistency-check_arm_64
Test logs without the fix:
'''
binary returned non-zero. Exit code: 1, stderr: , stdout:
Consistent CLOCK_REALTIME
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--------------------
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'''
Signed-off-by: Roman Stratiienko <r.stratiie...@gmail.com>
CC: linux-arm-ker...@lists.infradead.org
CC: linux-kernel@vger.kernel.org
CC: linux-su...@googlegroups.com
CC: meg...@megous.com
---
drivers/clocksource/arm_arch_timer.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/clocksource/arm_arch_timer.c
b/drivers/clocksource/arm_arch_timer.c
index 6c3e841801461..d50aa43cb654b 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -346,16 +346,17 @@ static u64 notrace arm64_858921_read_cntvct_el0(void)
* number of CPU cycles in 3 consecutive 24 MHz counter periods.
*/
#define __sun50i_a64_read_reg(reg) ({ \
- u64 _val; \
+ u64 _val1, _val2; \
int _retries = 150; \
\
do { \
- _val = read_sysreg(reg); \
+ _val1 = read_sysreg(reg); \
+ _val2 = read_sysreg(reg); \
_retries--; \
- } while (((_val + 1) & GENMASK(9, 0)) <= 1 && _retries); \
+ } while (((_val2 - _val1) > 0x10) && _retries); \
\
WARN_ON_ONCE(!_retries); \
- _val; \
+ _val2; \
})
static u64 notrace sun50i_a64_read_cntpct_el0(void)
--
2.25.1
