This is a note to let you know that I've just added the patch titled
watchdog: hpwdt: SMBIOS check
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: watchdog-hpwdt-smbios-check.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From c42cbe41727a138905a28f8e0b00c147be77ee93 Mon Sep 17 00:00:00 2001
From: Jerry Hoemann jerry.hoemann@hpe.com Date: Mon, 23 Oct 2017 16:46:16 -0600 Subject: watchdog: hpwdt: SMBIOS check
From: Jerry Hoemann jerry.hoemann@hpe.com
commit c42cbe41727a138905a28f8e0b00c147be77ee93 upstream.
This corrects: commit cce78da76601 ("watchdog: hpwdt: Add check for UEFI bits")
The test on HPE SMBIOS extension type 219 record "Misc Features" bits for UEFI support is incorrect. The definition of the Misc Features bits in the HPE SMBIOS OEM Extensions specification (and related firmware) was changed to use a different pair of bits to represent UEFI supported. Howerver, a corresponding change to Linux was missed.
Current code/platform work because the iCRU test is working. But purpose of cce78da766 is to ensure correct functionality on future systems where iCRU isn't supported.
Signed-off-by: Jerry Hoemann jerry.hoemann@hpe.com Reviewed-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@iguana.be Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/watchdog/hpwdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/watchdog/hpwdt.c +++ b/drivers/watchdog/hpwdt.c @@ -700,7 +700,7 @@ static void dmi_find_icru(const struct d smbios_proliant_ptr = (struct smbios_proliant_info *) dm; if (smbios_proliant_ptr->misc_features & 0x01) is_icru = 1; - if (smbios_proliant_ptr->misc_features & 0x408) + if (smbios_proliant_ptr->misc_features & 0x1400) is_uefi = 1; } }
Patches currently in stable-queue which might be from jerry.hoemann@hpe.com are
queue-4.15/watchdog-hpwdt-fix-unused-variable-warning.patch queue-4.15/watchdog-hpwdt-smbios-check.patch queue-4.15/watchdog-hpwdt-remove-legacy-nmi-sourcing.patch queue-4.15/watchdog-hpwdt-check-source-of-nmi.patch