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[42/65] staging: wfx: do not update uapsd if not necessary

Message ID 20200115121041.10863-43-Jerome.Pouiller@silabs.com (mailing list archive)
State Not Applicable
Delegated to: Johannes Berg
Headers show
Series Simplify and improve the wfx driver | expand

Commit Message

Jérôme Pouiller Jan. 15, 2020, 12:13 p.m. UTC 
From: Jérôme Pouiller <jerome.pouiller@silabs.com>

wfx_conf_tx() is called for each queue. On every call, the function
updates UAPSD mask and PM mode for all queues. It is a pity since the
UAPSD configuration very rarely changes and it makes exchanges between
the host and the chip more difficult to track.

This patch avoid to update UAPSD and Power Mode in most usual cases.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
 drivers/staging/wfx/sta.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index bf285389c303..6a43decd5ae6 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -286,6 +286,7 @@  int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 {
 	struct wfx_dev *wdev = hw->priv;
 	struct wfx_vif *wvif = (struct wfx_vif *) vif->drv_priv;
+	int old_uapsd = wvif->uapsd_mask;
 	int ret = 0;
 
 	WARN_ON(queue >= hw->queues);
@@ -294,7 +295,8 @@  int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	assign_bit(queue, &wvif->uapsd_mask, params->uapsd);
 	memcpy(&wvif->edca_params[queue], params, sizeof(*params));
 	hif_set_edca_queue_params(wvif, queue, params);
-	if (wvif->vif->type == NL80211_IFTYPE_STATION) {
+	if (wvif->vif->type == NL80211_IFTYPE_STATION &&
+	    old_uapsd != wvif->uapsd_mask) {
 		hif_set_uapsd_info(wvif, wvif->uapsd_mask);
 		wfx_update_pm(wvif);
 	}