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audio/hda: ignore replies with invalid codec number

ment 2011-06-28 22:17:49 +02:00
parent 2f1a0685ea
commit b3ad2a853a
1 changed files with 5 additions and 3 deletions
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8
sys/src/9/pc/audiohda.c
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@ -441,7 +441,7 @@ hdacmd(Ctlr *ctlr, uint request, uint reply[2])
if(csr16(ctlr, Rirbwp) != re){
re = (re + 1) % ctlr->rirbsize;
memmove(reply, &ctlr->rirb[re*2], 8);
return 8;
return 1;
}
microdelay(1);
}
@ -457,7 +457,9 @@ cmderr(Id id, uint verb, uint par, uint *ret)
q |= (verb << 8) | par;
else
q |= (verb << 16) | par;
if(hdacmd(id.ctlr, q, w) != 8)
if(hdacmd(id.ctlr, q, w) != 1)
return -1;
if(w[1] != id.codec)
return -1;
*ret = w[0];
return 0;
@ -1299,7 +1301,7 @@ hdacmdwrite(Chan *, void *a, long n, vlong)
lp = a;
qlock(ctlr);
for(i=0; i<n/4; i++){
if(hdacmd(ctlr, lp[i], w) < 0){
if(hdacmd(ctlr, lp[i], w) <= 0){
w[0] = 0;
w[1] = ~0;
}