LKML Archive on
help / color / mirror / Atom feed
* [PATCH v2] bluetooth: bfusb: update the reference count of udev
@ 2021-07-31 15:48 Salah Triki
  0 siblings, 0 replies; only message in thread
From: Salah Triki @ 2021-07-31 15:48 UTC (permalink / raw)
  To: Marcel Holtmann, Johan Hedberg, Luiz Augusto von Dentz, gregkh
  Cc: linux-bluetooth, linux-kernel

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));

^ permalink raw reply	[flat|nested] only message in thread

only message in thread, other threads:[~2021-07-31 15:50 UTC | newest]

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-31 15:48 [PATCH v2] bluetooth: bfusb: update the reference count of udev Salah Triki

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).