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From: Salah Triki <>
To: Marcel Holtmann <>,
	Johan Hedberg <>,
	Luiz Augusto von Dentz <>,
Subject: [PATCH v2] bluetooth: bfusb: update the reference count of udev
Date: Sat, 31 Jul 2021 16:48:54 +0100	[thread overview]
Message-ID: <20210731154854.GA909036@pc> (raw)

Use usb_get_dev() to increment the reference count of the usb device
structure in order to avoid releasing the structure while it is still in
use. And use usb_put_dev() to decrement the reference count and thus,
when it will be equal to 0 the structure will be released.

Signed-off-by: Salah Triki <>
Change since v1:
	Modification of the description

 drivers/bluetooth/bfusb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/bfusb.c b/drivers/bluetooth/bfusb.c
index 5a321b4076aa..c9145c914451 100644
--- a/drivers/bluetooth/bfusb.c
+++ b/drivers/bluetooth/bfusb.c
@@ -623,7 +623,7 @@ static int bfusb_probe(struct usb_interface *intf, const struct usb_device_id *i
 	if (!data)
 		return -ENOMEM;
-	data->udev = udev;
+	data->udev = usb_get_dev(udev);
 	data->bulk_in_ep    = bulk_in_ep->desc.bEndpointAddress;
 	data->bulk_out_ep   = bulk_out_ep->desc.bEndpointAddress;
 	data->bulk_pkt_size = le16_to_cpu(bulk_out_ep->desc.wMaxPacketSize);
@@ -699,6 +699,8 @@ static void bfusb_disconnect(struct usb_interface *intf)
 	usb_set_intfdata(intf, NULL);
+	usb_put_dev(interface_to_usbdev(intf));

                 reply	other threads:[~2021-07-31 15:50 UTC|newest]

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