[rt2x00-users] [PATCH 1/2] rt2x00 : hw support txdone implementation. (without fallback change)

[Pavel Roskin]

Hello!

I have tested both patches on the real hardware, and I don't see any
regressions.  Unfortunately, the issue with interrupts is still there,
so ping stops after 11 packets, which limited my ability to test the
change extensively.  That said, I was able to use wpa_supplicant and
dhcp to get an IP address using the patched driver in the station mode.

wpa_supplicant worked most of the time.  I believe the occasional
failures are due to a preexisting memory corruption issue (I reported
earlier that addr3 can be corrupted in probe requests).

Unfortunately, the patches include corrupt whitespace, so they had to be
applied by "patch -l".  Also, there are trailing tabs in two places.
That's not a big deal, but it's better avoided.  Please consider using
git or stgit to send patches.

> +	for (i=0; i<256; i++) {

checkpatch.pl complains about spacing.  There should be spaces around
"=" and "<"

> +		txwi = (__le32 *)(entry->skb->data -
> +				  rt2x00dev->hw->extra_tx_headroom);

I really don't see any point in introducing wrong code in one patch and
fixing it in another.  I would just join the patches.

When bisecting for a problem, landing at a broken commit can lead to a
lot of wasted time.

> +		rt2x00_desc_read(txwi, 1, &word);
> +		tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
> +		tx_ack  = rt2x00_get_field32(word, TXWI_W1_ACK);
> +		tx_pid  = rt2x00_get_field32(word, TXWI_W1_PACKETID);
> +
> +		if ((wcid != tx_wcid) || (ack != tx_ack) || (pid != tx_pid))
> +			WARNING(rt2x00dev, "invalid TX_STA_FIFO content\n");

Can we make this sanity check optional?

-- 
Regards,
Pavel Roskin