pcm: rate: Avoid pointer arithmetic on `void *`

The pointer operand to the binary `+` operator must be to a complete
object type.

Signed-off-by: Michael Forney <mforney@mforney.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/src/pcm/pcm_rate.c b/src/pcm/pcm_rate.c
index 5dc8a92..fdcaa8d 100644 (file)
--- a/src/pcm/pcm_rate.c
+++ b/src/pcm/pcm_rate.c
@@ -300,10 +300,10 @@ static int snd_pcm_rate_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params)
        rate->sareas = rate->pareas + channels;
        rate->sareas[0].addr = (char *)rate->pareas[0].addr + ((cwidth * channels * cinfo->period_size) / 8);
        for (chn = 0; chn < channels; chn++) {
-               rate->pareas[chn].addr = rate->pareas[0].addr + (cwidth * chn * cinfo->period_size) / 8;
+               rate->pareas[chn].addr = (char *)rate->pareas[0].addr + (cwidth * chn * cinfo->period_size) / 8;
                rate->pareas[chn].first = 0;
                rate->pareas[chn].step = cwidth;
-               rate->sareas[chn].addr = rate->sareas[0].addr + (swidth * chn * sinfo->period_size) / 8;
+               rate->sareas[chn].addr = (char *)rate->sareas[0].addr + (swidth * chn * sinfo->period_size) / 8;
                rate->sareas[chn].first = 0;
                rate->sareas[chn].step = swidth;
        }
@@ -513,14 +513,14 @@ static void do_convert(const snd_pcm_channel_area_t *dst_areas,
                const int16_t *src;
                int16_t *dst;
                if (! rate->src_buf)
-                       src = src_areas->addr + src_offset * 2 * channels;
+                       src = (int16_t *)src_areas->addr + src_offset * channels;
                else {
                        convert_to_s16(rate, rate->src_buf, src_areas, src_offset,
                                       src_frames, channels);
                        src = rate->src_buf;
                }
                if (! rate->dst_buf)
-                       dst = dst_areas->addr + dst_offset * 2 * channels;
+                       dst = (int16_t *)dst_areas->addr + dst_offset * channels;
                else
                        dst = rate->dst_buf;
                rate->ops.convert_s16(rate->obj, dst, dst_frames, src, src_frames);