linux-kernel - [PATCH] Bluetooth: btusb: Edit the logical value for Realtek Bluetooth reset

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Date:   Wed, 27 Nov 2019 11:01:07 +0800
From:   <max.chou@...ltek.com>
To:     <marcel@...tmann.org>
CC:     <johan.hedberg@...il.com>, <matthias.bgg@...il.com>,
        <linux-bluetooth@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <alex_lu@...lsil.com.cn>,
        <max.chou@...ltek.com>
Subject: [PATCH] Bluetooth: btusb: Edit the logical value for Realtek Bluetooth reset

From: Max Chou <max.chou@...ltek.com>

It should be pull low and pull high on the physical line for the Realtek
Bluetooth reset. gpiod_set_value_cansleep() takes ACTIVE_LOW status for
the logical value settings, so the original commit should be corrected.

Signed-off-by: Max Chou <max.chou@...ltek.com>
---
 drivers/bluetooth/btusb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 70e385987d41..82fb2e7b2892 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -552,9 +552,9 @@ static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 	}
 
 	bt_dev_err(hdev, "Reset Realtek device via gpio");
-	gpiod_set_value_cansleep(reset_gpio, 0);
-	msleep(200);
 	gpiod_set_value_cansleep(reset_gpio, 1);
+	msleep(200);
+	gpiod_set_value_cansleep(reset_gpio, 0);
 }
 
 static inline void btusb_free_frags(struct btusb_data *data)
-- 
2.17.1