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nusb/ether: dont break lan78xx chip (rpi3b+)

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The rpi3b+ uses different chip lan78xx.
This one does not append fcs in received frames,
so the previous change broke ethernet.
This commit is contained in:
cinap_lenrek 2025-01-03 09:24:18 +00:00
parent ef5a8a7337
commit 5a460a150b
1 changed files with 1 additions and 2 deletions
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3
sys/src/cmd/nusb/ether/lan78xx.c
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@ -252,11 +252,10 @@ lan78xxreceive(Dev *ep)
break; break;
if((hd & Rxerror) == 0){ if((hd & Rxerror) == 0){
if(n == BLEN(b)){ if(n == BLEN(b)){
b->wp -= 4;
etheriq(b); etheriq(b);
return 0; return 0;
} }
etheriq(copyblock(b, n - 4)); etheriq(copyblock(b, n));
} }
b->rp = (uchar*)(((uintptr)b->rp + n + 3)&~3); b->rp = (uchar*)(((uintptr)b->rp + n + 3)&~3);
} }