[ALSA] CS5535: shorter delays when accessing AC'97 codec registers

Modules: CS5535 driver

The 10 ms sleeps while waiting for AC'97 codec register reads/writes to
complete are excessive given the maxmium time is one AC'97 frame (~21 us).

With AC'97 codecs with integrated touchscreens (like the UCB1400) this
improves the interactive performance of the touchscreen.

Signed-off-by: David Vrabel <dvrabel@arcom.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/sound/pci/cs5535audio/cs5535audio.c b/sound/pci/cs5535audio/cs5535audio.c
index 02e3721030b7..9fc7f3827461 100644
--- a/sound/pci/cs5535audio/cs5535audio.c
+++ b/sound/pci/cs5535audio/cs5535audio.c
@@ -62,7 +62,7 @@ static void wait_till_cmd_acked(struct cs5535audio *cs5535au, unsigned long time
                 tmp = cs_readl(cs5535au, ACC_CODEC_CNTL);
                 if (!(tmp & CMD_NEW))
                         break;
-                msleep(10);
+                udelay(1);
         } while (--timeout);
         if (!timeout)
                 snd_printk(KERN_ERR "Failure writing to cs5535 codec\n");
@@ -80,14 +80,14 @@ static unsigned short snd_cs5535audio_codec_read(struct cs5535audio *cs5535au,
         regdata |= CMD_NEW;
 
         cs_writel(cs5535au, ACC_CODEC_CNTL, regdata);
-        wait_till_cmd_acked(cs5535au, 500);
+        wait_till_cmd_acked(cs5535au, 50);
 
         timeout = 50;
         do {
                 val = cs_readl(cs5535au, ACC_CODEC_STATUS);
                 if ((val & STS_NEW) && reg == (val >> 24))
                         break;
-                msleep(10);
+                udelay(1);
         } while (--timeout);
         if (!timeout)
                 snd_printk(KERN_ERR "Failure reading cs5535 codec\n");