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Wed, 05 Aug 2026 02:25:36 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs11n2.mediatek.inc (172.21.101.187) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.29; Wed, 5 Aug 2026 17:25:33 +0800 Received: from mtksitap99.mediatek.inc (10.233.130.16) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Wed, 5 Aug 2026 17:25:33 +0800 From: Eason Lai To: , CC: , , , , , , , , , , , Subject: [PATCH v1 2/2] wifi: mt76: mt7925: Add coredump end collect mechanism Date: Wed, 5 Aug 2026 17:25:31 +0800 Message-ID: <20260805092531.1490746-3-eason.lai@mediatek.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260805092531.1490746-1-eason.lai@mediatek.com> References: <20260805092531.1490746-1-eason.lai@mediatek.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260805_022539_853179_124CA5E6 X-CRM114-Status: GOOD ( 13.00 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: "ck.chang" Add collect mechanism, when parse to specific coredump string, immediately save the collected coredump content into coredump file Signed-off-by: ck.chang --- drivers/net/wireless/mediatek/mt76/mt76_connac.h | 1 + drivers/net/wireless/mediatek/mt76/mt7925/mac.c | 8 +++++++- drivers/net/wireless/mediatek/mt76/mt7925/mcu.c | 10 +++++++++- 3 files changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac.h b/drivers/net/wireless/mediatek/mt76/mt76_connac.h index b1677ca24703..6374add14160 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac.h +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac.h @@ -128,6 +128,7 @@ struct mt76_connac_coredump { struct sk_buff_head msg_list; struct delayed_work work; unsigned long last_activity; + bool complete; }; struct mt76_connac_sta_key_conf { diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c index b5dd1b58618c..77b6fa34a1ba 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mac.c @@ -1580,12 +1580,18 @@ void mt7925_coredump_work(struct work_struct *work) dev = (struct mt792x_dev *)container_of(work, struct mt792x_dev, coredump.work.work); - if (time_is_after_jiffies(dev->coredump.last_activity + + /* if received the last coredump payload or timeout, start + * saving coredump file and trigger reset. + * Otherwise, wait for other coredump payload coming + */ + if (!dev->coredump.complete && + time_is_after_jiffies(dev->coredump.last_activity + 4 * MT76_CONNAC_COREDUMP_TIMEOUT)) { queue_delayed_work(dev->mt76.wq, &dev->coredump.work, MT76_CONNAC_COREDUMP_TIMEOUT); return; } + dev->coredump.complete = false; skb_queue_head_init(&local_list); spin_lock_bh(&dev->mt76.lock); diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c index fa29c486a455..c4194c800dc6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c @@ -671,6 +671,7 @@ static void mt7925_mcu_uni_rx_unsolicited_event(struct mt792x_dev *dev, struct sk_buff *skb) { +#define COREDUMP_END_STR "; coredump end" struct mt7925_mcu_rxd *rxd; rxd = (struct mt7925_mcu_rxd *)skb->data; @@ -700,10 +701,17 @@ mt7925_mcu_uni_rx_unsolicited_event(struct mt792x_dev *dev, case MCU_UNI_EVENT_RSSI_MONITOR: mt7925_mcu_rssi_monitor_event(dev, skb); break; - case MCU_UNI_EVENT_COREDUMP: + case MCU_UNI_EVENT_COREDUMP: { + size_t hdr_len = sizeof(struct mt7925_mcu_rxd) + 8; + dev->fw_assert = true; + if (skb->len > hdr_len && + strnstr(skb->data + hdr_len, COREDUMP_END_STR, + skb->len - hdr_len)) + dev->coredump.complete = true; mt76_connac_mcu_coredump_event(&dev->mt76, skb, &dev->coredump); return; + } case MCU_UNI_EVENT_NAN: mt7925_nan_mcu_event(dev, skb); break; -- 2.45.2