2019-10-25 19:34:09

by Tony Chuang

[permalink] [raw]
Subject: [PATCH 4/6] rtw88: rearrange if..else statements for rx rate indexes

From: Yan-Hsuan Chuang <[email protected]>

Driver just memset() rx_status to 0 before assigning rate indexes.
And driver could never hit the 'else' because the driver checks
if 'pkt_stat->rate >= DESC_RATEMCS0', so the 'else' statement can
be removed.

Also rearrange the if..else statements because DESC_RATEMCS0 is
actually larger than DESC_RATE1M ~ DESC_RATE54M, move the check
of 'pkt_stat->rate >= DESC_RATEMCS0' to the last to keep an
increasing order.

Signed-off-by: Yan-Hsuan Chuang <[email protected]>
---
drivers/net/wireless/realtek/rtw88/rx.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw88/rx.c b/drivers/net/wireless/realtek/rtw88/rx.c
index 36887f998090..9b90339ab697 100644
--- a/drivers/net/wireless/realtek/rtw88/rx.c
+++ b/drivers/net/wireless/realtek/rtw88/rx.c
@@ -160,19 +160,17 @@ void rtw_rx_fill_rx_status(struct rtw_dev *rtwdev,
else if (pkt_stat->rate >= DESC_RATEMCS0)
rx_status->encoding = RX_ENC_HT;

- if (pkt_stat->rate >= DESC_RATEMCS0) {
- rtw_desc_to_mcsrate(pkt_stat->rate, &rx_status->rate_idx,
- &rx_status->nss);
- } else if (rx_status->band == NL80211_BAND_5GHZ &&
- pkt_stat->rate >= DESC_RATE6M &&
- pkt_stat->rate <= DESC_RATE54M) {
+ if (rx_status->band == NL80211_BAND_5GHZ &&
+ pkt_stat->rate >= DESC_RATE6M &&
+ pkt_stat->rate <= DESC_RATE54M) {
rx_status->rate_idx = pkt_stat->rate - DESC_RATE6M;
} else if (rx_status->band == NL80211_BAND_2GHZ &&
pkt_stat->rate >= DESC_RATE1M &&
pkt_stat->rate <= DESC_RATE54M) {
rx_status->rate_idx = pkt_stat->rate - DESC_RATE1M;
- } else {
- rx_status->rate_idx = 0;
+ } else if (pkt_stat->rate >= DESC_RATEMCS0) {
+ rtw_desc_to_mcsrate(pkt_stat->rate, &rx_status->rate_idx,
+ &rx_status->nss);
}

rx_status->flag |= RX_FLAG_MACTIME_START;
--
2.17.1