[ALSA] Fix thinko in cs4231 mce down check

The last patches to replace with schedule_timeout() don't work as expected.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 7 insertions, 6 deletions

diff --git a/sound/isa/cs423x/cs4231_lib.c b/sound/isa/cs423x/cs4231_lib.c
index 72cf77159083..a5eb9659b519 100644
--- a/sound/isa/cs423x/cs4231_lib.c
+++ b/sound/isa/cs423x/cs4231_lib.c
@@ -313,6 +313,7 @@ void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 {
         unsigned long flags;
+        unsigned long end_time;
         int timeout;
 
         snd_cs4231_busy_wait(chip);
@@ -344,28 +345,28 @@ void snd_cs4231_mce_down(struct snd_cs4231 *chip)
         snd_printdd("(1) jiffies = %lu\n", jiffies);
 
         /* check condition up to 250 ms */
-        timeout = msecs_to_jiffies(250);
+        end_time = jiffies + msecs_to_jiffies(250);
         while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
                 CS4231_CALIB_IN_PROGRESS) {
 
-                if (timeout <= 0) {
+                if (time_after(jiffies, end_time)) {
                         snd_printk(KERN_ERR "mce_down - "
                                         "auto calibration time out (2)\n");
                         return;
                 }
-                timeout = schedule_timeout(timeout);
+                msleep(1);
         }
 
         snd_printdd("(2) jiffies = %lu\n", jiffies);
 
         /* check condition up to 100 ms */
-        timeout = msecs_to_jiffies(100);
+        end_time = jiffies + msecs_to_jiffies(100);
         while (cs4231_inb(chip, CS4231P(REGSEL)) & CS4231_INIT) {
-                if (timeout <= 0) {
+                if (time_after(jiffies, end_time)) {
                         snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
                         return;
                 }
-                timeout = schedule_timeout(timeout);
+                msleep(1);
         }
 
         snd_printdd("(3) jiffies = %lu\n", jiffies);