From bc48fa1b9d3b04106055b27078da824cd209865a Mon Sep 17 00:00:00 2001
From: Corey Minyard <cminyard@mvista.com>
Date: Thu, 15 Feb 2018 16:58:26 -0600
Subject: [PATCH] ipmi:pci: Blacklist a Realtek "IPMI" device
Git-commit: bc48fa1b9d3b04106055b27078da824cd209865a
Patch-mainline: v4.17-rc1
References: FATE#326156
Realtek has some sort of "Virtual" IPMI device on the PCI bus as a
KCS controller, but whatever it is, it's not one. Ignore it if seen.
Reported-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Daniel Drake <drake@endlessm.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/char/ipmi/ipmi_si_pci.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/char/ipmi/ipmi_si_pci.c b/drivers/char/ipmi/ipmi_si_pci.c
index b1c055540b26..f54ca6869ed2 100644
--- a/drivers/char/ipmi/ipmi_si_pci.c
+++ b/drivers/char/ipmi/ipmi_si_pci.c
@@ -62,12 +62,24 @@ static int ipmi_pci_probe_regspacing(struct si_sm_io *io)
return DEFAULT_REGSPACING;
}
+static struct pci_device_id ipmi_pci_blacklist[] = {
+ /*
+ * This is a "Virtual IPMI device", whatever that is. It appears
+ * as a KCS device by the class, but it is not one.
+ */
+ { PCI_VDEVICE(REALTEK, 0x816c) },
+ { 0, }
+};
+
static int ipmi_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int rv;
struct si_sm_io io;
+ if (pci_match_id(ipmi_pci_blacklist, pdev))
+ return -ENODEV;
+
memset(&io, 0, sizeof(io));
io.addr_source = SI_PCI;
dev_info(&pdev->dev, "probing via PCI");
--
2.19.2