1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 30fe323c4551..f502d5b90c25 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -813,6 +813,11 @@ static int core_get_max_pstate(void)
                         if (err)
                                 goto skip_tar;
 
+                        /* For level 1 and 2, bits[23:16] contain the ratio */
+                        if (tdp_ctrl)
+                                tdp_ratio >>= 16;
+
+                        tdp_ratio &= 0xff; /* ratios are only 8 bits long */
                         if (tdp_ratio - 1 == tar) {
                                 max_pstate = tar;
                                 pr_debug("max_pstate=TAC %x\n", max_pstate);