diff options
| -rw-r--r-- | sys/dev/sound/pcm/dsp.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/dev/sound/pcm/dsp.c b/sys/dev/sound/pcm/dsp.c index d5a05d1..55147e3 100644 --- a/sys/dev/sound/pcm/dsp.c +++ b/sys/dev/sound/pcm/dsp.c @@ -1022,10 +1022,16 @@ dsp_mmap(dev_t i_dev, vm_offset_t offset, int nprot) return -1; } + if (offset >= sndbuf_getsize(c->bufsoft)) { + relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); + splx(s); + return -1; + } + if (!(c->flags & CHN_F_MAPPED)) c->flags |= CHN_F_MAPPED; - ret = atop(vtophys(((char *)sndbuf_getbuf(c->bufsoft)) + offset)); + ret = atop(vtophys(sndbuf_getbufofs(c->bufsoft, offset))); relchns(i_dev, rdch, wrch, SD_F_PRIO_RD | SD_F_PRIO_WR); splx(s); |
