| From: Dewet Thibaut <thibaut.dewet@nokia.com> |
| Date: Mon, 16 Jul 2018 10:49:27 +0200 |
| Subject: x86/MCE: Remove min interval polling limitation |
| |
| commit fbdb328c6bae0a7c78d75734a738b66b86dffc96 upstream. |
| |
| commit b3b7c4795c ("x86/MCE: Serialize sysfs changes") introduced a min |
| interval limitation when setting the check interval for polled MCEs. |
| However, the logic is that 0 disables polling for corrected MCEs, see |
| Documentation/x86/x86_64/machinecheck. The limitation prevents disabling. |
| |
| Remove this limitation and allow the value 0 to disable polling again. |
| |
| Fixes: b3b7c4795c ("x86/MCE: Serialize sysfs changes") |
| Signed-off-by: Dewet Thibaut <thibaut.dewet@nokia.com> |
| Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> |
| [ Massage commit message. ] |
| Signed-off-by: Borislav Petkov <bp@suse.de> |
| Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
| Cc: Tony Luck <tony.luck@intel.com> |
| Cc: linux-edac <linux-edac@vger.kernel.org> |
| Link: http://lkml.kernel.org/r/20180716084927.24869-1-alexander.sverdlin@nokia.com |
| Signed-off-by: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| arch/x86/kernel/cpu/mcheck/mce.c | 3 --- |
| 1 file changed, 3 deletions(-) |
| |
| --- a/arch/x86/kernel/cpu/mcheck/mce.c |
| +++ b/arch/x86/kernel/cpu/mcheck/mce.c |
| @@ -2260,9 +2260,6 @@ static ssize_t store_int_with_restart(st |
| if (check_interval == old_check_interval) |
| return ret; |
| |
| - if (check_interval < 1) |
| - check_interval = 1; |
| - |
| mutex_lock(&mce_sysfs_mutex); |
| mce_restart(); |
| mutex_unlock(&mce_sysfs_mutex); |
