PSC platform profile mode is only supported on Linux for AMD platforms. Some older Intel platforms (e.g T490) are advertising it's capability as Windows uses it - but on Linux we should only be using MMC profile for Intel systems. Add a check to prevent it being enabled incorrectly. Signed-off-by: Mark Pearson <markpearson@xxxxxxxxxx> --- drivers/platform/x86/thinkpad_acpi.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index e6cb4a14cdd4..be194be43663 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -10548,6 +10548,11 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) dytc_mmc_get_available = true; } } else if (output & BIT(DYTC_FC_PSC)) { /* PSC MODE */ + /* Support for this only works on AMD platforms */ + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) { + dbg_printk(TPACPI_DBG_INIT, "PSC not support on Intel platforms\n"); + return -ENODEV; + } dytc_profile_available = DYTC_FUNCMODE_PSC; } else { dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); -- 2.35.1