From 045deec7e92065d250c1884c8cd1dfcc7a4fcd5d Mon Sep 17 00:00:00 2001 From: David Bauer Date: Sun, 15 Mar 2026 17:47:15 +0100 Subject: [PATCH] wifi: mt76: mt7915: set mt76 specific PS flag mt76 tracks the PSM state of a sta internally with a wcid flag. TX to such clients is skipped based on the presence of this flag. This flag was not added to the PS state notify handler for MT7915 chips. Without this flag, mt76 queues pending frames to the hardware, accounting for airtime when a PSM notification is received while in a TX iteration. Set the PS flag for the STA WCID to prevent this from happening. TX gets skipped in presence of this flag. Link: https://patchwork.kernel.org/project/linux-wireless/patch/20260313112502.2026974-1-mail@david-bauer.net/ Signed-off-by: David Bauer --- package/kernel/mt76/Makefile | 2 +- ...t76-mt7915-set-mt76-specific-PS-flag.patch | 42 +++++++++++++++++++ 2 files changed, 43 insertions(+), 1 deletion(-) create mode 100644 package/kernel/mt76/patches/0001-wifi-mt76-mt7915-set-mt76-specific-PS-flag.patch diff --git a/package/kernel/mt76/Makefile b/package/kernel/mt76/Makefile index 5245e7868a..bedcba4275 100644 --- a/package/kernel/mt76/Makefile +++ b/package/kernel/mt76/Makefile @@ -1,7 +1,7 @@ include $(TOPDIR)/rules.mk PKG_NAME:=mt76 -PKG_RELEASE=1 +PKG_RELEASE=2 PKG_LICENSE:=BSD-3-Clause-Clear PKG_LICENSE_FILES:= diff --git a/package/kernel/mt76/patches/0001-wifi-mt76-mt7915-set-mt76-specific-PS-flag.patch b/package/kernel/mt76/patches/0001-wifi-mt76-mt7915-set-mt76-specific-PS-flag.patch new file mode 100644 index 0000000000..b904cddf33 --- /dev/null +++ b/package/kernel/mt76/patches/0001-wifi-mt76-mt7915-set-mt76-specific-PS-flag.patch @@ -0,0 +1,42 @@ +From e78688a4f44478a9270813ac494fc548ed6b3be9 Mon Sep 17 00:00:00 2001 +From: David Bauer +Date: Fri, 13 Mar 2026 12:19:37 +0100 +Subject: [PATCH] wifi: mt76: mt7915: set mt76 specific PS flag + +mt76 tracks the PSM state of a sta internally with a wcid flag. TX to +such clients is skipped based on the presence of this flag. + +This flag was not added to the PS state notify handler for MT7915 chips. +Without this flag, mt76 queues pending frames to the hardware, +accounting for airtime when a PSM notification is received while in a TX +iteration. + +Set the PS flag for the STA WCID to prevent this from happening. TX gets +skipped in presence of this flag. + +Link: https://patchwork.kernel.org/project/linux-wireless/patch/20260313112502.2026974-1-mail@david-bauer.net/ + +Signed-off-by: David Bauer +--- + mt7915/mcu.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/mt7915/mcu.c b/mt7915/mcu.c +index 6625f905..52c89d2b 100644 +--- a/mt7915/mcu.c ++++ b/mt7915/mcu.c +@@ -421,6 +421,11 @@ static void mt7915_mcu_rx_ps_sync(struct mt7915_dev *dev, struct sk_buff *skb) + if (!sta) + goto out; + ++ if (p->ps_bit) ++ set_bit(MT_WCID_FLAG_PS, &wcid->flags); ++ else ++ clear_bit(MT_WCID_FLAG_PS, &wcid->flags); ++ + ieee80211_sta_ps_transition_ni(sta, !!p->ps_bit); + + out: +-- +2.51.0 +