Commit bce6243f authored by Mark Pearson's avatar Mark Pearson Committed by Hans de Goede

platform/x86: thinkpad_acpi: do not use PSC mode on Intel platforms

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: default avatarMark Pearson <markpearson@lenovo.com>
Link: https://lore.kernel.org/r/20220627181449.3537-1-markpearson@lenovo.comReviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 42504af7
......@@ -10541,6 +10541,11 @@ static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm)
dytc_mmc_get_available = true;
}
} else if (dytc_capabilities & 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;
}
pr_debug("PSC is supported\n");
} else {
dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n");
......
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