From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Dewet Thibaut" , "Tony Luck" , "Thomas Gleixner" , "linux-edac" , "Alexander Sverdlin" , "Borislav Petkov" Date: Sun, 11 Nov 2018 19:49:05 +0000 Message-ID: Subject: [PATCH 3.16 265/366] x86/MCE: Remove min interval polling limitation In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.16.61-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Dewet Thibaut 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 Signed-off-by: Alexander Sverdlin [ Massage commit message. ] Signed-off-by: Borislav Petkov Signed-off-by: Thomas Gleixner Cc: Tony Luck Cc: linux-edac Link: http://lkml.kernel.org/r/20180716084927.24869-1-alexander.sverdlin@nokia.com Signed-off-by: Ben Hutchings --- 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);