[ALSA] intel8x0: another attempt to fix ac97_clock measure routine

Appearently, a big delay ~300ms is required before hw is settled and ready
to transfer samples on some hardware variants. Also, return back
"clocking to 48000Hz" message when something fails.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 4 insertions, 2 deletions

diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index 5dced5b7938..c4ba486785c 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -2751,11 +2751,12 @@ static void __devinit intel8x0_measure_ac97_clock(struct intel8x0 *chip)
         if (pos == 0) {
                 snd_printk(KERN_ERR "intel8x0: measure - unreliable DMA position..\n");
               __retry:
-                if (attempt < 2) {
+                if (attempt < 3) {
+                        msleep(300);
                         attempt++;
                         goto __again;
                 }
-                return;
+                goto __end;
         }
 
         pos /= 4;
@@ -2782,6 +2783,7 @@ static void __devinit intel8x0_measure_ac97_clock(struct intel8x0 *chip)
         else if (pos < 47500 || pos > 48500)
                 /* not 48000Hz, tuning the clock.. */
                 chip->ac97_bus->clock = (chip->ac97_bus->clock * 48000) / pos;
+      __end:
         printk(KERN_INFO "intel8x0: clocking to %d\n", chip->ac97_bus->clock);
         snd_ac97_update_power(chip->ac97[0], AC97_PCM_FRONT_DAC_RATE, 0);
 }