From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 47B33367B6D; Thu, 20 Aug 2026 14:49:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787237389; cv=none; b=JlkZuzGdiu0QyjTTTIQC4rTjWjzNFlKvT0VVEvF6PmJmZfgxLWEIxs19Z3kJM0xmjpOEG437G9dkSayEUrGFCol5nqaRe7kxXluGN4Z4LbK+ZErcCzG1UQU1DIxs+aecveO8XY5iKK9NCI1Wu3JNF6j+/WnEeVI/6vFkn/SDBn4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787237389; c=relaxed/simple; bh=A0OeZ74Kh4ZpcoVUny/Pz6jZqZYktIHQ5VjlmUhO+CA=; h=Message-ID:Date:MIME-Version:From:Subject:To:Cc:References: In-Reply-To:Content-Type; b=FKek/Xg2M+kuFvMa4aKxU0K8lutfj4eStoqxOEQmki6aPjmyqXJwJSE+JyW0bezmKtqYEOIJSsoK8n7xKHoVE3sxUDV/rGB+Y5/6dw7e3qOnWTCrUXvuQdeQiWDt0j7aUSTZRYaYOJ9uTw3l2Js/4HwpnebA4dejw4UrudHTI9w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iC8YWowG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iC8YWowG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71C031F00A3A; Thu, 20 Aug 2026 14:49:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787237387; bh=POY30+8+IPnBPBkgedSZL8fAdy6Ow+8r1LvS0tY8m2k=; h=Date:From:Subject:To:Cc:References:In-Reply-To; b=iC8YWowGtdk0u/sjWcl2XTObHg47Ruq3yu6wCQl2Vbffw+DXqm5IrasJFZJBXFgwU dL6e9EPplBXIjmyiBPq3SgHmPoBb5XScl+HSfpJon6UZz2Bn/6Bb6sazZ8zu7TOhTf p+Xfe/H2Zyuey120FSK9On2dhBwgKvQ4IGU/iJV7vPTFisexsT98RsEjsHl3XwA4Ra cTIYo8UwMwOxsS9tKNJwJK2Um8io4Cuw4oa0C0iSPx52GJpJbFV3Pn8/51vZJKkZ6l mxbTHtt9q0bQaF47ez9krISx4Zc4a8pvxpSoebeVvZOcSSCOZVrD5BPmunqAiLUKiz i2vrzph8NeygA== Message-ID: <9e6142fb-bb69-459b-b7e7-4aaf2bbc3bc4@kernel.org> Date: Thu, 20 Aug 2026 16:49:39 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Krzysztof Kozlowski Subject: Re: [PATCH] hwrng: npcm: fix usage_count leak when autosuspend_delay is negative To: Guangshuo Li , Andrew Jeffery , Avi Fishman , Tomer Maimon , Tali Perry , Patrick Venture , Nancy Yuen , Benjamin Fair , Olivia Mackall , Herbert Xu , Daniel Thompson , openbmc@lists.ozlabs.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org References: <20260808073748.2649808-1-lgs201920130244@gmail.com> Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 08/08/2026 09:37, Guangshuo Li wrote: > npcm_rng_probe() calls pm_runtime_use_autosuspend(), but neither the > probe failure path nor npcm_rng_remove() calls the matching > pm_runtime_dont_use_autosuspend() before disabling runtime PM. > > If the autosuspend delay is set to a negative value while autosuspend > is enabled, the runtime PM core increments usage_count to prevent > runtime suspend. Without calling pm_runtime_dont_use_autosuspend() > during teardown, this reference is not dropped and usage_count remains > unbalanced. > > Add the missing pm_runtime_dont_use_autosuspend() calls to both the > probe failure and remove paths before disabling runtime PM. > > This issue was found by manual code inspection. > > Fixes: c98429297d8b ("hwrng: npcm - add NPCM RNG driver") > Cc: stable@vger.kernel.org > Signed-off-by: Guangshuo Li You sent vast amount of patches, all separate, making it very difficult to track and respond in efficient way. Do not do that. Group your work per subsystem. You were asked to clarify and respond to incorrect fixes statement. I do not see how you clarified and responded at all. Best regards, Krzysztof