This is a note to let you know that I've just added the patch titled x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: x86-reboot-add-zotac-zbox-ci327-nano-pci-reboot-quir.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 7abc05dc957df7dfb39c3bb57b93802be37d2262 Author: Heiner Kallweit <hkallweit1@xxxxxxxxx> Date: Tue Dec 1 12:39:57 2020 +0100 x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk [ Upstream commit 4b2d8ca9208be636b30e924b1cbcb267b0740c93 ] On this system the M.2 PCIe WiFi card isn't detected after reboot, only after cold boot. reboot=pci fixes this behavior. In [0] the same issue is described, although on another system and with another Intel WiFi card. In case it's relevant, both systems have Celeron CPUs. Add a PCI reboot quirk on affected systems until a more generic fix is available. [0] https://bugzilla.kernel.org/show_bug.cgi?id=202399 [ bp: Massage commit message. ] Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lkml.kernel.org/r/1524eafd-f89c-cfa4-ed70-0bde9e45eec9@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index cbe14f7c2826..1c2451107e49 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -418,6 +418,15 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = { }, }, + { /* PCIe Wifi card isn't detected after reboot otherwise */ + .callback = set_pci_reboot, + .ident = "Zotac ZBOX CI327 nano", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "NA"), + DMI_MATCH(DMI_PRODUCT_NAME, "ZBOX-CI327NANO-GS-01"), + }, + }, + /* Sony */ { /* Handle problems with rebooting on Sony VGN-Z540N */ .callback = set_bios_reboot,