From 55d8e6a85bce21f748c42eedea63681219f70523 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Tue, 8 Dec 2020 19:12:33 +0100
Subject: [PATCH] ASoC: AMD Raven/Renoir - fix the PCI probe (PCI revision)
Git-commit: 55d8e6a85bce21f748c42eedea63681219f70523
Patch-mainline: v5.11-rc1
References: git-fixes

The Raven and Renoir ACP can be distinguished by the PCI revision.
Let's do the check very early, otherwise the wrong probe code
can be run.

Link: https://lore.kernel.org/alsa-devel/2e4587f8-f602-cf23-4845-fd27a32b1cfc@amd.com/
Cc: <stable@kernel.org>
Cc: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20201208181233.2745726-1-perex@perex.cz
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/amd/raven/pci-acp3x.c     | 4 ++++
 sound/soc/amd/renoir/rn-pci-acp3x.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c
index a7de4e607961..24d0f955243d 100644
--- a/sound/soc/amd/raven/pci-acp3x.c
+++ b/sound/soc/amd/raven/pci-acp3x.c
@@ -118,6 +118,10 @@ static int snd_acp3x_probe(struct pci_dev *pci,
 	int ret, i;
 	u32 addr, val;
 
+	/* Raven device detection */
+	if (pci->revision != 0x00)
+		return -ENODEV;
+
 	if (pci_enable_device(pci)) {
 		dev_err(&pci->dev, "pci_enable_device failed\n");
 		return -ENODEV;
diff --git a/sound/soc/amd/renoir/rn-pci-acp3x.c b/sound/soc/amd/renoir/rn-pci-acp3x.c
index 877350f38a68..d9e6e49bff01 100644
--- a/sound/soc/amd/renoir/rn-pci-acp3x.c
+++ b/sound/soc/amd/renoir/rn-pci-acp3x.c
@@ -176,6 +176,10 @@ static int snd_rn_acp_probe(struct pci_dev *pci,
 	int ret, index;
 	u32 addr;
 
+	/* Renoir device check */
+	if (pci->revision != 0x01)
+		return -ENODEV;
+
 	if (pci_enable_device(pci)) {
 		dev_err(&pci->dev, "pci_enable_device failed\n");
 		return -ENODEV;
-- 
2.26.2