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From:   <max.chou@realtek.com>
To:     <marcel@holtmann.org>
CC:     <johan.hedberg@gmail.com>, <luiz.dentz@gmail.com>,
        <linux-bluetooth@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <alex_lu@realsil.com.cn>, <hildawu@realtek.com>,
        <max.chou@realtek.com>, <regressions@lists.linux.dev>,
        <kirill@shutemov.name>, <bagasdotme@gmail.com>,
        <linux@leemhuis.info>
Subject: [PATCH] Bluetooth: btrtl: Ignore error return for hci_devcd_register()
Date:   Fri, 6 Oct 2023 10:47:07 +0800
Message-ID: <20231006024707.413349-1-max.chou@realtek.com>
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From: Max Chou <max.chou@realtek.com>

If CONFIG_DEV_COREDUMP was not set, it would return -EOPNOTSUPP for
hci_devcd_register().
In this commit, ignore error return for hci_devcd_register().
Otherwise Bluetooth initialization will be failed.

Fixes: 044014ce85a1 ("Bluetooth: btrtl: Add Realtek devcoredump support")
Cc: stable@vger.kernel.org
Reported-by: Kirill A. Shutemov <kirill@shutemov.name>
Closes: https://lore.kernel.org/all/ZRyqIn0_qqEFBPdy@debian.me/T/
Signed-off-by: Max Chou <max.chou@realtek.com>
---
 drivers/bluetooth/btrtl.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 84c2c2e1122f..277d039ecbb4 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -962,13 +962,10 @@ static void btrtl_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb)
 	skb_put_data(skb, buf, strlen(buf));
 }
 
-static int btrtl_register_devcoredump_support(struct hci_dev *hdev)
+static void btrtl_register_devcoredump_support(struct hci_dev *hdev)
 {
-	int err;
+	hci_devcd_register(hdev, btrtl_coredump, btrtl_dmp_hdr, NULL);
 
-	err = hci_devcd_register(hdev, btrtl_coredump, btrtl_dmp_hdr, NULL);
-
-	return err;
 }
 
 void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name)
@@ -1255,8 +1252,7 @@ int btrtl_download_firmware(struct hci_dev *hdev,
 	}
 
 done:
-	if (!err)
-		err = btrtl_register_devcoredump_support(hdev);
+	btrtl_register_devcoredump_support(hdev);
 
 	return err;
 }
-- 
2.34.1