linux-kernel - Re: [PATCH] usbmon: fix tiny race exposed by the fastboot patches

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Message-Id: <20080913140507.91f8b0fe.zaitcev@redhat.com>
Date:	Sat, 13 Sep 2008 14:05:07 -0600
From:	Pete Zaitcev <zaitcev@...hat.com>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH] usbmon: fix tiny race exposed by the fastboot patches

On Sat, 13 Sep 2008 12:48:58 -0700, Arjan van de Ven <arjan@...radead.org> wrote:

> +++ b/drivers/usb/mon/mon_main.c
> @@ -361,12 +361,12 @@ static int __init mon_init(void)
>  	}
>  	// MOD_INC_USE_COUNT(which_module?);
>  
> -	usb_register_notify(&mon_nb);
>  
>  	mutex_lock(&usb_bus_list_lock);
>  	list_for_each_entry (ubus, &usb_bus_list, bus_list) {
>  		mon_bus_init(ubus);
>  	}
> +	usb_register_notify(&mon_nb);
>  	mutex_unlock(&usb_bus_list_lock);

Looks like the above does not add new deadlocks and does not
miss notifications, so ACK.

-- Pete
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