| From | Borislav Petkov <> | Subject | [PATCH v0 16/42] USB: Check notifier registration return value | Date | Mon, 8 Nov 2021 11:11:31 +0100 |
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From: Borislav Petkov <bp@suse.de>
Avoid homegrown notifier registration checks.
No functional changes.
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: linux-usb@vger.kernel.org --- drivers/usb/core/notify.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/notify.c b/drivers/usb/core/notify.c index e6143663778f..80d1bfa61887 100644 --- a/drivers/usb/core/notify.c +++ b/drivers/usb/core/notify.c @@ -28,7 +28,8 @@ static BLOCKING_NOTIFIER_HEAD(usb_notifier_list); */ void usb_register_notify(struct notifier_block *nb) { - blocking_notifier_chain_register(&usb_notifier_list, nb); + if (blocking_notifier_chain_register(&usb_notifier_list, nb)) + pr_warn("USB change notifier already registered\n"); } EXPORT_SYMBOL_GPL(usb_register_notify); -- 2.29.2
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