linux-kernel - [tip: x86/misc] x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk

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Date:   Wed, 30 Dec 2020 17:50:14 -0000
From:   "tip-bot2 for Heiner Kallweit" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Borislav Petkov <bp@...e.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/misc] x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk

The following commit has been merged into the x86/misc branch of tip:

Commit-ID:     4b2d8ca9208be636b30e924b1cbcb267b0740c93
Gitweb:        https://git.kernel.org/tip/4b2d8ca9208be636b30e924b1cbcb267b0740c93
Author:        Heiner Kallweit <hkallweit1@...il.com>
AuthorDate:    Tue, 01 Dec 2020 12:39:57 +01:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Wed, 30 Dec 2020 18:38:39 +01:00

x86/reboot: Add Zotac ZBOX CI327 nano PCI reboot quirk

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@...il.com>
Signed-off-by: Borislav Petkov <bp@...e.de>
Link: https://lkml.kernel.org/r/1524eafd-f89c-cfa4-ed70-0bde9e45eec9@gmail.com
---
 arch/x86/kernel/reboot.c |  9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index db11594..9991c59 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -477,6 +477,15 @@ static const struct dmi_system_id reboot_dmi_table[] __initconst = {
 		},
 	},
 
+	{	/* 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,