x86: tsc: Remove the fail handling in try_msr_calibrate_tsc()

If either ratio or freq is zero, the return value is zero. There
is no need to create a fail branch and return zero there.

This keeps in sync with Linux kernel commit:
  14bb4e3: x86/tsc_msr: Remove debugging messages

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/timer/tsc_timer.c b/drivers/timer/tsc_timer.c
index 4d01c9bce793231a7e1d9531936800fb22d7d383..bdbecac196b808fbaaa3d68b912f6b9ae2e34cf9 100644 (file)
--- a/drivers/timer/tsc_timer.c
+++ b/drivers/timer/tsc_timer.c
@@ -103,9 +103,6 @@ static unsigned long __maybe_unused try_msr_calibrate_tsc(void)
        }
        debug("Maximum core-clock to bus-clock ratio: 0x%x\n", ratio);
 
-       if (!ratio)
-               goto fail;
-
        if (freq_desc_tables[cpu_index].msr_plat == 2) {
                /* TODO: Figure out how best to deal with this */
                freq = FREQ_100;
@@ -118,18 +115,12 @@ static unsigned long __maybe_unused try_msr_calibrate_tsc(void)
                debug("Resolved frequency ID: %u, frequency: %u KHz\n",
                      freq_id, freq);
        }
-       if (!freq)
-               goto fail;
 
        /* TSC frequency = maximum resolved freq * maximum resolved bus ratio */
        res = freq * ratio / 1000;
        debug("TSC runs at %lu MHz\n", res);
 
        return res;
-
-fail:
-       debug("Fast TSC calibration using MSR failed\n");
-       return 0;
 }
 
 /*