ALSA: usb-audio: add support for Akai MPD16

[safe/jmp/linux-2.6] / init / calibrate.c

diff --git a/init/calibrate.c b/init/calibrate.c
index 8628697..6eb48e5 100644 (file)
--- a/init/calibrate.c
+++ b/init/calibrate.c
@@ -10,7 +10,7 @@
 #include <linux/timex.h>
 #include <linux/smp.h>
 
-unsigned long lpj_tsc;
+unsigned long lpj_fine;
 unsigned long preset_lpj;
 static int __init lpj_setup(char *str)
 {
@@ -35,9 +35,9 @@ static unsigned long __cpuinit calibrate_delay_direct(void)
        unsigned long pre_start, start, post_start;
        unsigned long pre_end, end, post_end;
        unsigned long start_jiffies;
-       unsigned long tsc_rate_min, tsc_rate_max;
-       unsigned long good_tsc_sum = 0;
-       unsigned long good_tsc_count = 0;
+       unsigned long timer_rate_min, timer_rate_max;
+       unsigned long good_timer_sum = 0;
+       unsigned long good_timer_count = 0;
        int i;
 
        if (read_current_timer(&pre_start) < 0 )
@@ -81,22 +81,24 @@ static unsigned long __cpuinit calibrate_delay_direct(void)
                }
                read_current_timer(&post_end);
 
-               tsc_rate_max = (post_end - pre_start) / DELAY_CALIBRATION_TICKS;
-               tsc_rate_min = (pre_end - post_start) / DELAY_CALIBRATION_TICKS;
+               timer_rate_max = (post_end - pre_start) /
+                                       DELAY_CALIBRATION_TICKS;
+               timer_rate_min = (pre_end - post_start) /
+                                       DELAY_CALIBRATION_TICKS;
 
                /*
-                * If the upper limit and lower limit of the tsc_rate is
+                * If the upper limit and lower limit of the timer_rate is
                 * >= 12.5% apart, redo calibration.
                 */
                if (pre_start != 0 && pre_end != 0 &&
-                   (tsc_rate_max - tsc_rate_min) < (tsc_rate_max >> 3)) {
-                       good_tsc_count++;
-                       good_tsc_sum += tsc_rate_max;
+                   (timer_rate_max - timer_rate_min) < (timer_rate_max >> 3)) {
+                       good_timer_count++;
+                       good_timer_sum += timer_rate_max;
                }
        }
 
-       if (good_tsc_count)
-               return (good_tsc_sum/good_tsc_count);
+       if (good_timer_count)
+               return (good_timer_sum/good_timer_count);
 
        printk(KERN_WARNING "calibrate_delay_direct() failed to get a good "
               "estimate for loops_per_jiffy.\nProbably due to long platform interrupts. Consider using \"lpj=\" boot option.\n");
@@ -111,8 +113,8 @@ static unsigned long __cpuinit calibrate_delay_direct(void) {return 0;}
  * bit takes on average 1.5/HZ seconds.  This (like the original) is a little
  * better than 1%
  * For the boot cpu we can skip the delay calibration and assign it a value
- * calculated based on the tsc frequency.
- * For the rest of the CPUs we cannot assume that the tsc frequency is same as
+ * calculated based on the timer frequency.
+ * For the rest of the CPUs we cannot assume that the timer frequency is same as
  * the cpu frequency, hence do the calibration for those.
  */
 #define LPS_PREC 8
@@ -121,23 +123,26 @@ void __cpuinit calibrate_delay(void)
 {
        unsigned long ticks, loopbit;
        int lps_precision = LPS_PREC;
+       static bool printed;
 
        if (preset_lpj) {
                loops_per_jiffy = preset_lpj;
-               printk(KERN_INFO
-                       "Calibrating delay loop (skipped) preset value.. ");
-       } else if ((smp_processor_id() == 0) && lpj_tsc) {
-               loops_per_jiffy = lpj_tsc;
-               printk(KERN_INFO
-                       "Calibrating delay loop (skipped), "
-                       "using tsc calculated value.. ");
+               if (!printed)
+                       pr_info("Calibrating delay loop (skipped) "
+                               "preset value.. ");
+       } else if ((!printed) && lpj_fine) {
+               loops_per_jiffy = lpj_fine;
+               pr_info("Calibrating delay loop (skipped), "
+                       "value calculated using timer frequency.. ");
        } else if ((loops_per_jiffy = calibrate_delay_direct()) != 0) {
-               printk(KERN_INFO
-                       "Calibrating delay using timer specific routine.. ");
+               if (!printed)
+                       pr_info("Calibrating delay using timer "
+                               "specific routine.. ");
        } else {
                loops_per_jiffy = (1<<12);
 
-               printk(KERN_INFO "Calibrating delay loop... ");
+               if (!printed)
+                       pr_info("Calibrating delay loop... ");
                while ((loops_per_jiffy <<= 1) != 0) {
                        /* wait for "start of" clock tick */
                        ticks = jiffies;
@@ -168,7 +173,10 @@ void __cpuinit calibrate_delay(void)
                                loops_per_jiffy &= ~loopbit;
                }
        }
-       printk(KERN_INFO "%lu.%02lu BogoMIPS (lpj=%lu)\n",
+       if (!printed)
+               pr_cont("%lu.%02lu BogoMIPS (lpj=%lu)\n",
                        loops_per_jiffy/(500000/HZ),
                        (loops_per_jiffy/(5000/HZ)) % 100, loops_per_jiffy);
+
+       printed = true;
 }