ping?
OpenBSD-7.1 still occur this.
--
SASANO Takayoshi (JG1UAA) <u...@mx5.nisiq.net>
On Sat, 16 Oct 2021 12:21:57 +0900,
SASANO Takayoshi wrote:
>
> Hi,
>
> At least 6.9 and 7.0 (and -current) sometimes shows a dmesg that:
>
> puc1 at pci1 dev 0 function 1 "ASIX AX99100" rev 0x00: ports: 16 com
> com5 at puc1 port 0 apic 1 int 1: st16650, 32 byte fifo
> com5: probed fifo depth: 0 bytes
>
> In sys/dev/ic/com.c:com_fifo_probe(), I found that transmitted data to
> determine FIFO depth is not received. And, a bit delay is required after
> TX/RX FIFO reset.
>
> Simply adding com_read_reg(sc, com_iir) resolves this issue on my PC,
> but I think delay(100) may be better like other resetting FIFO.
>
> Here is the diff, any comments will be welcomed.
>
> Index: com.c
> ===================================================================
> RCS file: /cvs/src/sys/dev/ic/com.c,v
> retrieving revision 1.174
> diff -u -p -r1.174 com.c
> --- com.c 6 May 2021 20:35:21 -0000 1.174
> +++ com.c 16 Oct 2021 03:05:54 -0000
> @@ -1562,6 +1562,7 @@ com_fifo_probe(struct com_softc *sc)
> fifo |= FIFO_ENABLE_64BYTE;
>
> com_write_reg(sc, com_fifo, fifo);
> + delay(100);
>
> for (len = 0; len < 256; len++) {
> com_write_reg(sc, com_data, (len + 1));
>
> --
> SASANO Takayoshi (JG1UAA) <u...@mx5.nisiq.net>
>
