The patch titled
arch/x86/kernel/hpet.c: make the "hpet: compare register read back failed" warning conditional on the hpet=verbose boot option
has been added to the -mm tree. Its filename is
arch-x86-kernel-hpetc-make-the-hpet-compare-register-read-back-failed-warning-conditional-on-the-hpet=verbose-boot-option.patch
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------------------------------------------------------
Subject: arch/x86/kernel/hpet.c: make the "hpet: compare register read back failed" warning conditional on the hpet=verbose boot option
From: john stultz <johnstul@xxxxxxxxxx>
A considerable number of people are hitting this warning and are raising
"bug" reports. We don't seem to be getting much benefit from the warning,
so let's hide it unless hpet-verbose.
Signed-off-by: John Stultz <johnstul@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Venkatesh Pallipadi <venki@xxxxxxxxxx>
Cc: Zhang Rui <rui.zhang@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/hpet.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff -puN arch/x86/kernel/hpet.c~arch-x86-kernel-hpetc-make-the-hpet-compare-register-read-back-failed-warning-conditional-on-the-hpet=verbose-boot-option arch/x86/kernel/hpet.c
--- a/arch/x86/kernel/hpet.c~arch-x86-kernel-hpetc-make-the-hpet-compare-register-read-back-failed-warning-conditional-on-the-hpet=verbose-boot-option
+++ a/arch/x86/kernel/hpet.c
@@ -406,8 +406,10 @@ static int hpet_next_event(unsigned long
* read returns old value.
*/
if (unlikely((u32)hpet_readl(HPET_Tn_CMP(timer)) != cnt)) {
- WARN_ONCE(hpet_readl(HPET_Tn_CMP(timer)) != cnt,
- KERN_WARNING "hpet: compare register read back failed.\n");
+ if (hpet_verbose)
+ WARN_ONCE(hpet_readl(HPET_Tn_CMP(timer)) != cnt,
+ KERN_WARNING
+ "hpet: compare register read back failed.\n");
}
return (s32)(hpet_readl(HPET_COUNTER) - cnt) >= 0 ? -ETIME : 0;
_
Patches currently in -mm which might be from johnstul@xxxxxxxxxx are
linux-next.patch
arch-x86-kernel-hpetc-make-the-hpet-compare-register-read-back-failed-warning-conditional-on-the-hpet=verbose-boot-option.patch
cs5535-clockevt-free-timer-in-irq-setup-error-path.patch
time-clean-up-warp_clock.patch
time-clean-up-direct-xtime-usage-in-xen.patch
ntp-make-time_adjust-static.patch
ntp-remove-tickadj.patch
xtensa-fix-unnecessary-setting-of-xtime.patch
hangcheck-timer-fix-x86_32-bugs.patch
time-kill-off-config_generic_time.patch
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