ALSA: Clean up 64bit division functions

Replace the house-made div64_32() with the standard div_u64*() functions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 74 deletions

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index c1729689161..0caf71e1694 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -486,80 +486,6 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream);
 void snd_pcm_vma_notify_data(void *client, void *data);
 int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area);
 
-#if BITS_PER_LONG >= 64
-
-static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
-{
-	*rem = *n % div;
-	*n /= div;
-}
-
-#elif defined(i386)
-
-static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
-{
-	u_int32_t low, high;
-	low = *n & 0xffffffff;
-	high = *n >> 32;
-	if (high) {
-		u_int32_t high1 = high % div;
-		high /= div;
-		asm("divl %2":"=a" (low), "=d" (*rem):"rm" (div), "a" (low), "d" (high1));
-		*n = (u_int64_t)high << 32 | low;
-	} else {
-		*n = low / div;
-		*rem = low % div;
-	}
-}
-#else
-
-static inline void divl(u_int32_t high, u_int32_t low,
-			u_int32_t div,
-			u_int32_t *q, u_int32_t *r)
-{
-	u_int64_t n = (u_int64_t)high << 32 | low;
-	u_int64_t d = (u_int64_t)div << 31;
-	u_int32_t q1 = 0;
-	int c = 32;
-	while (n > 0xffffffffU) {
-		q1 <<= 1;
-		if (n >= d) {
-			n -= d;
-			q1 |= 1;
-		}
-		d >>= 1;
-		c--;
-	}
-	q1 <<= c;
-	if (n) {
-		low = n;
-		*q = q1 | (low / div);
-		*r = low % div;
-	} else {
-		*r = 0;
-		*q = q1;
-	}
-	return;
-}
-
-static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem)
-{
-	u_int32_t low, high;
-	low = *n & 0xffffffff;
-	high = *n >> 32;
-	if (high) {
-		u_int32_t high1 = high % div;
-		u_int32_t low1 = low;
-		high /= div;
-		divl(high1, low1, div, &low, rem);
-		*n = (u_int64_t)high << 32 | low;
-	} else {
-		*n = low / div;
-		*rem = low % div;
-	}
-}
-#endif
-
 /*
  *  PCM library
  */