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From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-wireless@vger.kernel.org
Cc: tony0620emma@gmail.com, kvalo@codeaurora.org,
	johannes@sipsolutions.net, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, Neo Jou <neojou@gmail.com>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH RFC v1 7/7] rtw88: fw: Convert h2c.lock from a spinlock to a mutex
Date: Sat, 17 Jul 2021 22:40:57 +0200	[thread overview]
Message-ID: <20210717204057.67495-8-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20210717204057.67495-1-martin.blumenstingl@googlemail.com>

Upcoming SDIO support may sleep in the read/write handlers. Switch
the h2c.lock from a spinlock to a mutex to allow for this behavior.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/net/wireless/realtek/rtw88/fw.c   | 14 +++++++-------
 drivers/net/wireless/realtek/rtw88/main.c |  2 +-
 drivers/net/wireless/realtek/rtw88/main.h |  2 +-
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c
index 3bfa5ecc0053..5acc798299e5 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.c
+++ b/drivers/net/wireless/realtek/rtw88/fw.c
@@ -285,7 +285,7 @@ static void rtw_fw_send_h2c_command(struct rtw_dev *rtwdev,
 		h2c[3], h2c[2], h2c[1], h2c[0],
 		h2c[7], h2c[6], h2c[5], h2c[4]);
 
-	spin_lock(&rtwdev->h2c.lock);
+	mutex_lock(&rtwdev->h2c.lock);
 
 	box = rtwdev->h2c.last_box_num;
 	switch (box) {
@@ -310,9 +310,9 @@ static void rtw_fw_send_h2c_command(struct rtw_dev *rtwdev,
 		goto out;
 	}
 
-	ret = read_poll_timeout_atomic(rtw_read8, box_state,
-				       !((box_state >> box) & 0x1), 100, 3000,
-				       false, rtwdev, REG_HMETFR);
+	ret = read_poll_timeout(rtw_read8, box_state,
+				!((box_state >> box) & 0x1), 100, 3000, false,
+				rtwdev, REG_HMETFR);
 
 	if (ret) {
 		rtw_err(rtwdev, "failed to send h2c command\n");
@@ -328,7 +328,7 @@ static void rtw_fw_send_h2c_command(struct rtw_dev *rtwdev,
 		rtwdev->h2c.last_box_num = 0;
 
 out:
-	spin_unlock(&rtwdev->h2c.lock);
+	mutex_unlock(&rtwdev->h2c.lock);
 }
 
 void rtw_fw_h2c_cmd_dbg(struct rtw_dev *rtwdev, u8 *h2c)
@@ -340,7 +340,7 @@ static void rtw_fw_send_h2c_packet(struct rtw_dev *rtwdev, u8 *h2c_pkt)
 {
 	int ret;
 
-	spin_lock(&rtwdev->h2c.lock);
+	mutex_lock(&rtwdev->h2c.lock);
 
 	FW_OFFLOAD_H2C_SET_SEQ_NUM(h2c_pkt, rtwdev->h2c.seq);
 	ret = rtw_hci_write_data_h2c(rtwdev, h2c_pkt, H2C_PKT_SIZE);
@@ -348,7 +348,7 @@ static void rtw_fw_send_h2c_packet(struct rtw_dev *rtwdev, u8 *h2c_pkt)
 		rtw_err(rtwdev, "failed to send h2c packet\n");
 	rtwdev->h2c.seq++;
 
-	spin_unlock(&rtwdev->h2c.lock);
+	mutex_unlock(&rtwdev->h2c.lock);
 }
 
 void
diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
index 5ebc4c0b4ccc..34e5bc97d9f4 100644
--- a/drivers/net/wireless/realtek/rtw88/main.c
+++ b/drivers/net/wireless/realtek/rtw88/main.c
@@ -1834,12 +1834,12 @@ int rtw_core_init(struct rtw_dev *rtwdev)
 	skb_queue_head_init(&rtwdev->coex.queue);
 	skb_queue_head_init(&rtwdev->tx_report.queue);
 
-	spin_lock_init(&rtwdev->h2c.lock);
 	spin_lock_init(&rtwdev->txq_lock);
 	spin_lock_init(&rtwdev->tx_report.q_lock);
 
 	mutex_init(&rtwdev->mutex);
 	mutex_init(&rtwdev->rf_lock);
+	mutex_init(&rtwdev->h2c.lock);
 	mutex_init(&rtwdev->coex.mutex);
 	mutex_init(&rtwdev->hal.tx_power_mutex);
 
diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index fd213252fbe2..1788fc339afb 100644
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -1868,7 +1868,7 @@ struct rtw_dev {
 		/* incicate the mail box to use with fw */
 		u8 last_box_num;
 		/* protect to send h2c to fw */
-		spinlock_t lock;
+		struct mutex lock;
 		u32 seq;
 	} h2c;
 
-- 
2.32.0


  parent reply	other threads:[~2021-07-17 20:41 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-17 20:40 [PATCH RFC v1 0/7] rtw88: prepare locking for SDIO support Martin Blumenstingl
2021-07-17 20:40 ` [PATCH RFC v1 1/7] mac80211: Add stations iterator where the iterator function may sleep Martin Blumenstingl
2021-07-19  5:46   ` Pkshih
2021-07-19  6:30   ` Johannes Berg
2021-07-17 20:40 ` [PATCH RFC v1 2/7] rtw88: Use rtw_iterate_vifs where the iterator reads or writes registers Martin Blumenstingl
2021-07-19  5:47   ` Pkshih
2021-07-25 21:31     ` Martin Blumenstingl
2021-07-26  7:22       ` Pkshih
2021-07-17 20:40 ` [PATCH RFC v1 3/7] rtw88: Use rtw_iterate_stas " Martin Blumenstingl
2021-07-19  6:36   ` Johannes Berg
2021-07-25 21:51     ` Martin Blumenstingl
2021-07-26  7:22       ` Pkshih
2021-08-09 20:00         ` Johannes Berg
2021-07-17 20:40 ` [PATCH RFC v1 4/7] rtw88: Replace usage of rtw_iterate_keys_rcu() with rtw_iterate_keys() Martin Blumenstingl
2021-07-17 20:40 ` [PATCH RFC v1 5/7] rtw88: Configure the registers from rtw_bf_assoc() outside the RCU lock Martin Blumenstingl
2021-07-19  5:47   ` Pkshih
2021-07-25 21:36     ` Martin Blumenstingl
2021-07-26  7:22       ` Pkshih
2021-07-17 20:40 ` [PATCH RFC v1 6/7] rtw88: hci: Convert rf_lock from a spinlock to a mutex Martin Blumenstingl
2021-07-17 20:40 ` Martin Blumenstingl [this message]
2021-07-19  5:52 ` [PATCH RFC v1 0/7] rtw88: prepare locking for SDIO support Pkshih

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