[PATCH 6.2 247/663] platform/x86/amd: pmc: Dont try to read SMU version on Picasso

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From: Mario Limonciello <mario.limonciello@xxxxxxx>

[ Upstream commit b845772677ea19b8e4c032bc07393ef32de4ee39 ]

Picasso doesn't support the command in the uPEP mailbox to try to
read the SMU version.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2449
Fixes: f6045de1f532 ("platform/x86: amd-pmc: Export Idlemask values based on the APU")
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Link: https://lore.kernel.org/r/20230409185348.556161-2-Shyam-sundar.S-k@xxxxxxx
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/platform/x86/amd/pmc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/platform/x86/amd/pmc.c b/drivers/platform/x86/amd/pmc.c
index 3cbb01ec10e32..0553a6419bb90 100644
--- a/drivers/platform/x86/amd/pmc.c
+++ b/drivers/platform/x86/amd/pmc.c
@@ -377,6 +377,9 @@ static int amd_pmc_get_smu_version(struct amd_pmc_dev *dev)
 	int rc;
 	u32 val;
 
+	if (dev->cpu_id == AMD_CPU_ID_PCO)
+		return -ENODEV;
+
 	rc = amd_pmc_send_cmd(dev, 0, &val, SMU_MSG_GETSMUVERSION, 1);
 	if (rc)
 		return rc;
-- 
2.39.2






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