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 c17296891617..0caf71e16944 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
  */