From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 3B1CE1CAA8; Sat, 20 Apr 2024 11:40:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713613216; cv=none; b=u05Kgr0iHm956G8I0bYumH33mZtDCgR4Hnemn+aVc6xvkq9IthGP3MseD9lN/EcpPcI1Dinro9T49mjMiVM/dM8igY+Y1RSJq+rXCXleja6zyfJwcJb9sreY4AajnL5aqoDsqSwE1Wse1GGIM/J3yeKeSODpQ3Q3P+2rzthzr3I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713613216; c=relaxed/simple; bh=UVqO4y//njIlBbGdFg3Uk9hYqThRr/O1BYn9DgJTfj4=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=K5o7vfmhyTJeGHC/X84y3W8NgSM1bKusAd0CL07UlCcpvR91fHavFpbu2ELXtZldz77/WWvaM6Fi5tS5XxR5i1oUg4xWCe560EWoyHqteQlja5Y+RC5lGgTfbN6oEBS3KMW+u1yc9DNMffpo978M38DyH49uOuqKELL6q6XbDvY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=T9jIj78Q; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="T9jIj78Q" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 67368C072AA; Sat, 20 Apr 2024 11:40:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713613215; bh=UVqO4y//njIlBbGdFg3Uk9hYqThRr/O1BYn9DgJTfj4=; h=Date:Subject:From:To:Cc:References:In-Reply-To:From; b=T9jIj78QEanT7FIW72Kvxw+je2l4UacyuVWhs5FMrdRUfeMvozpcAL+rrnZUFMl1N fHorhInZEUWDfmnTheO/KEhgwYKyL3JBMsOlNYlV8E89W1QSqR3o58p+qmfp+zfHen szjJ5osV819yNRCkNrQrtcNkbvvOSI3VDX9Vy+YbAKjXA/oG/FxjLx9DLfYu1ROWAN HwxbnOZvWlklTgzWJtKjiv66KJNJ27qNF0lF0H1CJj2ISQ1eWW+gnwMg5q0YnZbUk7 1zvAd/uee8aTWmaouLLKiIiKU5suLWTz7AIeoyiBc+r91yIMaPzUoP/uPHXKcPHyje kQ+BkHG0IfV1A== Message-ID: <5d054c36-a082-4484-bab1-746b7b30c71b@kernel.org> Date: Sat, 20 Apr 2024 13:40:09 +0200 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 5/6] soc: qcom: add pd-mapper implementation From: Krzysztof Kozlowski To: Dmitry Baryshkov Cc: Bjorn Andersson , Konrad Dybcio , Mathieu Poirier , Sibi Sankar , Bartosz Golaszewski , linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, Johan Hovold , Xilin Wu References: <20240419-qcom-pd-mapper-v5-0-e35b6f847e99@linaro.org> <20240419-qcom-pd-mapper-v5-5-e35b6f847e99@linaro.org> <67c90fcd-df2f-40e4-9507-dcc9340f2319@kernel.org> Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 19/04/2024 20:45, Krzysztof Kozlowski wrote: >> >>> >>>> Remoteproc module depends on this symbol. Once q6v5 remoteproc modules >>>> are unloaded this module can be unloaded too. >>> >>> I am pretty sure you can unload this and get crashes. >> >> If for some reason somebody has called qcom_pdm_get() without >> qcom_pdm_release(), then yes. To make it 100% safe, I can cleanup >> actions to module_exit(), but for me it looks like an overkill. > > I'll come with some more concrete example if you are not convinced. It's not possible, this code does not compile. I fixed one thing but then it fails in other places. This was probably never built and for sure never really compile-tested in few more configurations. Best regards, Krzysztof