LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
* [PATCH v2] bluetooth: bcm203x: update the reference count of udev
@ 2021-07-31 15:41 Salah Triki
  2021-08-01 18:01 ` Marcel Holtmann
  0 siblings, 1 reply; 4+ messages in thread
From: Salah Triki @ 2021-07-31 15:41 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 <salah.triki@gmail.com>
---
Change since v1:
	Modification of the description

 drivers/bluetooth/bcm203x.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/bcm203x.c b/drivers/bluetooth/bcm203x.c
index e667933c3d70..547d35425d70 100644
--- a/drivers/bluetooth/bcm203x.c
+++ b/drivers/bluetooth/bcm203x.c
@@ -166,7 +166,7 @@ static int bcm203x_probe(struct usb_interface *intf, const struct usb_device_id
 	if (!data)
 		return -ENOMEM;
 
-	data->udev  = udev;
+	data->udev  = usb_get_dev(udev);
 	data->state = BCM203X_LOAD_MINIDRV;
 
 	data->urb = usb_alloc_urb(0, GFP_KERNEL);
@@ -244,6 +244,8 @@ static void bcm203x_disconnect(struct usb_interface *intf)
 
 	usb_set_intfdata(intf, NULL);
 
+	usb_put_dev(data->udev);
+
 	usb_free_urb(data->urb);
 	kfree(data->fw_data);
 	kfree(data->buffer);
-- 
2.25.1


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-08-02 20:16 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-31 15:41 [PATCH v2] bluetooth: bcm203x: update the reference count of udev Salah Triki
2021-08-01 18:01 ` Marcel Holtmann
2021-08-02 19:34   ` Salah Triki
2021-08-02 20:16     ` Alan Stern

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).