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From: Lorenzo Bianconi <lorenzo@kernel.org>
To: nbd@nbd.name
Cc: linux-mediatek@lists.infradead.org, lorenzo.bianconi@redhat.com,
	sean.wang@mediatek.com, linux-wireless@vger.kernel.org,
	ryder.lee@mediatek.com
Subject: [PATCH 12/17] mt76: mt7615: check MT76_STATE_PM flag before accessing the device
Date: Fri, 26 Jun 2020 23:25:12 +0200
Message-ID: <1aeb01ddefdd112ffbabca0f488ca3cd0c4ccd3e.1593204577.git.lorenzo@kernel.org> (raw)
In-Reply-To: <cover.1593204577.git.lorenzo@kernel.org>

Double-check if the device is in low-power state before accessing
registermap in mt7615_sta_rate_tbl_update() and in
mt7615_led_set_config()

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7615/main.c     | 3 ++-
 drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index 32f060014bb7..3ab8e7e9be44 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -652,7 +652,8 @@ static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw,
 			break;
 	}
 	msta->n_rates = i;
-	mt7615_mac_set_rates(phy, msta, NULL, msta->rates);
+	if (!test_bit(MT76_STATE_PM, &phy->mt76->state))
+		mt7615_mac_set_rates(phy, msta, NULL, msta->rates);
 	msta->rate_probe = false;
 	spin_unlock_bh(&dev->mt76.lock);
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
index 69cba8609edf..7224a0078211 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
@@ -70,6 +70,10 @@ mt7615_led_set_config(struct led_classdev *led_cdev,
 
 	mt76 = container_of(led_cdev, struct mt76_dev, led_cdev);
 	dev = container_of(mt76, struct mt7615_dev, mt76);
+
+	if (test_bit(MT76_STATE_PM, &mt76->phy.state))
+		return;
+
 	val = FIELD_PREP(MT_LED_STATUS_DURATION, 0xffff) |
 	      FIELD_PREP(MT_LED_STATUS_OFF, delay_off) |
 	      FIELD_PREP(MT_LED_STATUS_ON, delay_on);
-- 
2.26.2


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  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-26 21:25 [PATCH 00/17] add runtime-pm support to mt7663 driver Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 01/17] mt76: mt7615: avoid polling in fw_own for mt7663 Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 02/17] mt76: move mt76 worqueue in common code Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 03/17] mt76: mt7615: add mt7615_pm_wake utility routine Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 04/17] mt76: mt7615: introduce mt7615_mutex_{acquire, release} utilities Lorenzo Bianconi
2020-07-01 19:26   ` [PATCH 04/17] mt76: mt7615: introduce mt7615_mutex_{acquire,release} utilities Felix Fietkau
2020-06-26 21:25 ` [PATCH 05/17] mt76: mt7615: wake device before accessing regmap in debugfs Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 06/17] mt76: mt7615: wake device before configuring hw keys Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 07/17] mt76: mt7615: introduce pm_power_save delayed work Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 08/17] mt76: mt7615: wake device in mt7615_update_channel before access regmap Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 09/17] mt76: mt7615: acquire driver_own before configuring device for suspend Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 10/17] mt76: mt7615: wake device before pulling packets from mac80211 queues Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 11/17] mt76: mt7615: wake device before pushing frames in mt7615_tx Lorenzo Bianconi
2020-06-26 21:25 ` Lorenzo Bianconi [this message]
2020-06-26 21:25 ` [PATCH 13/17] mt76: mt7615: do not request {driver, fw}_own if already granted Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 14/17] mt76: mt7615: add runtime-pm knob in mt7615 debugfs Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 15/17] mt76: mt7615: enable beacon hw filter for runtime-pm Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 16/17] mt76: mt7615: add idle-timeout knob in mt7615 debugfs Lorenzo Bianconi
2020-06-26 21:25 ` [PATCH 17/17] mt76: mt7615: improve mt7615_driver_own reliability Lorenzo Bianconi

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