Most users see this message when booting without knowning that it is of
mostly no importance and that TSC calibration may have succeeded by another
way.
As explained thoroufly by Paul Bolle in 2012
(http://lkml.iu.edu//hypermail/linux/kernel/1209.3/00224.html),
"Fast TSC calibration failed" should not be considered as an error since
other calibration methods are being tried afterward. At most, those send a
warning if they fail (not an error). So let's change the message from error
to warning.
It should also fix bug 75971: fast tsc calibration failed on ubuntu 14.04 LTS
Tested on kernel 3.18.
v2: fixed comment.
Cc: [email protected]
Signed-off-by: Alexandre Demers <[email protected]>
---
arch/x86/kernel/tsc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index b6025f9..5a22022 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -617,7 +617,7 @@ static unsigned long quick_pit_calibrate(void)
goto success;
}
}
- pr_err("Fast TSC calibration failed\n");
+ pr_warn("Fast TSC calibration failed\n");
return 0;
success:
--
2.1.0