[...]
>
>> @@ -1712,7 +1710,20 @@ static void ath10k_htt_rx_frm_tx_compl(struct ath10k *ar,
>> for (i = 0; i < resp->data_tx_completion.num_msdus; i++) {
>> msdu_id = resp->data_tx_completion.msdus[i];
>> tx_done.msdu_id = __le16_to_cpu(msdu_id);
>> - ath10k_txrx_tx_unref(htt, &tx_done);
>> +
>> + /* kfifo_put: In practice firmware shouldn't fire off per-CE
>> + * interrupt and main interrupt (MSI/-X range case) for the same
>> + * HTC service so it should be safe to use kfifo_put w/o lock.
>> + *
>> + * From kfifo_put() documentation:
>> + * Note that with only one concurrent reader and one concurrent
>> + * writer, you don't need extra locking to use these macro.
>> + */
>> + if (!kfifo_put(&htt->txdone_fifo, tx_done)) {
>> + ath10k_warn(ar, "txdone fifo overrun, msdu_id %d status %d\n",
>> + tx_done.msdu_id, tx_done.status);
>> + ath10k_txrx_tx_unref(htt, &tx_done);
>> + }
>
> I see two new warnings on the kfifo_put() call:
>
> drivers/net/wireless/ath/ath10k/htt_rx.c:1722:22: warning: cast to non-scalar
> drivers/net/wireless/ath/ath10k/htt_rx.c:1722:22: warning: cast from non-scalar
>
> But I suspect they are false warnings due to my old compiler:
>
> gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
>
> Opinions?
>
Hmm... I am not sure why older compiler is not complaining this. Unfortunately
both x86 and cross compiler are not throwing any warnings though :(
gcc version 5.3.0 (GCC)
Target: x86_64-unknown-linux-gnu
gcc version 4.8.3 (OpenWrt/Linaro GCC 4.8-2014.04 r47724)
Target: arm-openwrt-linux-uclibcgnueabi
Any suggestions welcome.
-Rajkumar
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