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Date: Fri, 24 Apr 2020 13:09:37 +0000
From: Jerome Pouiller <Jerome.Pouiller@...abs.com>
To: Suraj Upadhyay <usuraj35@...il.com>
CC: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH v2] staging: wfx: cleanup long lines in data_tx.c
On Friday 24 April 2020 14:41:32 CEST Suraj Upadhyay wrote:
> Break lines with length over 80 characters to conform
> to the linux coding style and refactor wherever necessary.
>
> Signed-off-by: Suraj Upadhyay <usuraj35@...il.com>
> ---
>
> Changes in v2:
> - Introduced a temporary variable for the memzcmp statement.
> - Addressed the checkpatch problem with wfx_get_hw_rate().
> - Restored the function definition of wfx_tx_get_tx_parms
> as suggested by the reviewer.
> - Added suggested changes for req->packet_id statement.
>
> drivers/staging/wfx/data_tx.c | 39 ++++++++++++++++++++++-------------
> 1 file changed, 25 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
> index 9c1a91207dd8..ae472ff8a088 100644
> --- a/drivers/staging/wfx/data_tx.c
> +++ b/drivers/staging/wfx/data_tx.c
> @@ -20,6 +20,7 @@
> static int wfx_get_hw_rate(struct wfx_dev *wdev,
> const struct ieee80211_tx_rate *rate)
> {
> + struct ieee80211_rate tmp;
There should be an empty line between variables declarations and start of
the code.
Maybe you could find a better name for the variable? (arf... "rate" is
already used)
> if (rate->idx < 0)
> return -1;
> if (rate->flags & IEEE80211_TX_RC_MCS) {
> @@ -31,7 +32,8 @@ static int wfx_get_hw_rate(struct wfx_dev *wdev,
> }
> // WFx only support 2GHz, else band information should be retrieved
> // from ieee80211_tx_info
> - return wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->bitrates[rate->idx].hw_value;
> + tmp = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ]->bitrates[rate->idx];
I would avoid the copy of the struct. (event if, in your case, I think it
does not change the generated code.
> + return tmp.hw_value;
> }
>
> /* TX policy cache implementation */
> @@ -159,14 +161,16 @@ static int wfx_tx_policy_upload(struct wfx_vif *wvif)
> {
> struct tx_policy *policies = wvif->tx_policy_cache.cache;
> u8 tmp_rates[12];
> - int i;
> + int i, tmp;
Maybe you could name it 'is_used' ?
>
> do {
> spin_lock_bh(&wvif->tx_policy_cache.lock);
> - for (i = 0; i < HIF_TX_RETRY_POLICY_MAX; ++i)
> - if (!policies[i].uploaded &&
> - memzcmp(policies[i].rates, sizeof(policies[i].rates)))
> + for (i = 0; i < HIF_TX_RETRY_POLICY_MAX; ++i) {
> + tmp = memzcmp(policies[i].rates,
> + sizeof(policies[i].rates));
> + if (!policies[i].uploaded && tmp)
> break;
> + }
> if (i < HIF_TX_RETRY_POLICY_MAX) {
> policies[i].uploaded = true;
> memcpy(tmp_rates, policies[i].rates, sizeof(tmp_rates));
> @@ -290,7 +294,8 @@ static void wfx_tx_fixup_rates(struct ieee80211_tx_rate *rates)
> if (rates[i].idx == -1) {
> rates[i].idx = 0;
> rates[i].count = 8; // == hw->max_rate_tries
> - rates[i].flags = rates[i - 1].flags & IEEE80211_TX_RC_MCS;
> + rates[i].flags = rates[i - 1].flags &
> + IEEE80211_TX_RC_MCS;
> break;
> }
> }
> @@ -318,7 +323,8 @@ static u8 wfx_tx_get_rate_id(struct wfx_vif *wvif,
> return rate_id;
> }
>
> -static struct hif_ht_tx_parameters wfx_tx_get_tx_parms(struct wfx_dev *wdev, struct ieee80211_tx_info *tx_info)
> +static struct hif_ht_tx_parameters wfx_tx_get_tx_parms(struct wfx_dev *wdev,
> + struct ieee80211_tx_info *tx_info)
> {
> struct ieee80211_tx_rate *rate = &tx_info->driver_rates[0];
> struct hif_ht_tx_parameters ret = { };
> @@ -381,7 +387,8 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta,
> hif_msg->id = HIF_REQ_ID_TX;
> hif_msg->interface = wvif->id;
> if (skb->len > wvif->wdev->hw_caps.size_inp_ch_buf) {
> - dev_warn(wvif->wdev->dev, "requested frame size (%d) is larger than maximum supported (%d)\n",
> + dev_warn(wvif->wdev->dev,
> + "requested frame size (%d) is larger than maximum supported (%d)\n",
> skb->len, wvif->wdev->hw_caps.size_inp_ch_buf);
> skb_pull(skb, wmsg_len);
> return -EIO;
> @@ -392,9 +399,10 @@ static int wfx_tx_inner(struct wfx_vif *wvif, struct ieee80211_sta *sta,
> // packet_id just need to be unique on device. 32bits are more than
> // necessary for that task, so we tae advantage of it to add some extra
> // data for debug.
> - req->packet_id = queue_id << 28 |
> - IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)) << 16 |
> - (atomic_add_return(1, &wvif->wdev->packet_id) & 0xFFFF);
> + req->packet_id = atomic_add_return(1, &wvif->wdev->packet_id) & 0xFFFF;
> + req->packet_id |= IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl)) << 16;
> + req->packet_id |= queue_id << 28;
> +
> req->data_flags.fc_offset = offset;
> if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM)
> req->data_flags.after_dtim = 1;
> @@ -517,7 +525,8 @@ void wfx_tx_confirm_cb(struct wfx_vif *wvif, const struct hif_cnf_tx *arg)
> if (tx_count < rate->count &&
> arg->status == HIF_STATUS_RETRY_EXCEEDED &&
> arg->ack_failures)
> - dev_dbg(wvif->wdev->dev, "all retries were not consumed: %d != %d\n",
> + dev_dbg(wvif->wdev->dev,
> + "all retries were not consumed: %d != %d\n",
> rate->count, tx_count);
> if (tx_count <= rate->count && tx_count &&
> arg->txed_rate != wfx_get_hw_rate(wvif->wdev, rate))
> @@ -554,7 +563,8 @@ void wfx_tx_confirm_cb(struct wfx_vif *wvif, const struct hif_cnf_tx *arg)
> else
> tx_info->flags |= IEEE80211_TX_STAT_ACK;
> } else if (arg->status == HIF_REQUEUE) {
> - WARN(!arg->tx_result_flags.requeue, "incoherent status and result_flags");
> + WARN(!arg->tx_result_flags.requeue,
> + "incoherent status and result_flags");
> if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
> wvif->after_dtim_tx_allowed = false; // DTIM period elapsed
> schedule_work(&wvif->update_tim_work);
> @@ -588,7 +598,8 @@ void wfx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
> if (wait_event_timeout(wdev->tx_dequeue,
> wfx_tx_queue_empty(wdev, queue, vif_id),
> msecs_to_jiffies(1000)) <= 0)
> - dev_warn(wdev->dev, "frames queued while flushing tx queues?");
> + dev_warn(wdev->dev,
> + "frames queued while flushing tx queues?");
> }
> wfx_tx_flush(wdev);
> if (wdev->chip_frozen)
>
Ok, for the last changes.
--
Jérôme Pouiller
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