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 0CE7730E844; Tue, 18 Nov 2025 09:31:05 +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=1763458268; cv=none; b=cO4Hfn5wbniFGBoj/Y+8nIMqFA4vwk5ScD8JubTKFJh2VAjR5Izi9+fRhiX9yd24ChjbnCx911quyjiJPKIcgnYSfMWu26wn6JViADdcN5i/QiKNOEQ3PkHM/zdMT0YbhVa6/RFPYvVU2gpf2Z0Rq0W75HLqzBfGT3h7piTmOi8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763458268; c=relaxed/simple; bh=4TNZaT8r5tzBuSY3hFUraN8mTq+40kMaWLjGphPl704=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=g2ZyiYN6NP0pnMFxdKr+7gXvAb63eK1Y/ppOJkEhaJMvAEtx6bksKUGumuM9f8+sWCpoUZG/YObqW2Zmm0kw5ZKswhkXgtS/hKzfWYas7VLRSczfi18jWhxNbMEdAwOBxBfWisNQYgOzZ6Utv4Do8ayqQ/YuIyS0O64tBmDRr1s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cB7/7yKs; 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="cB7/7yKs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2AA20C2BCF5; Tue, 18 Nov 2025 09:31:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763458265; bh=4TNZaT8r5tzBuSY3hFUraN8mTq+40kMaWLjGphPl704=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=cB7/7yKsYW5zcoNXxPLoosK5pEYjRXemT9O5ORibCxixJHPDGRtCu0muXPWVoV+VM nNPVF6KDW84fesz7WWm1zpDTOU7aUk0wLqDwj4wC3SB60FMSgB4R0u51hv8V7h6mAS EA/JPH4gtXylKs16griK4l6rovEaPLGGhS7Xe4sjRlvMD3lwWJ4M1hZUAJtn+aEACl tEEezdOEQtK81XJnlQU1XPNQLYmGwbjIDj/rHuvc/Mqda0mbyCUPbUxuEapYH0dfLz /e4J2EGqVWuxcE7uvDTF5sg5EuUsXUKuE0feZjdSxK/q9Iyh92dG1fWq0CHGnmASSa qq3lXte8SBFyg== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1vLI3C-000000000eb-3pHg; Tue, 18 Nov 2025 10:31:02 +0100 Date: Tue, 18 Nov 2025 10:31:02 +0100 From: Johan Hovold To: Amelie Delaunay Cc: Vinod Koul , Ludovic Desroches , Viresh Kumar , Andy Shevchenko , Vinicius Costa Gomes , Dave Jiang , Vladimir Zapolskiy , Piotr Wojtaszczyk , Maxime Coquelin , Alexandre Torgue , Peter Ujfalusi , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Pierre-Yves MORDRET Subject: Re: [PATCH 09/15] dmaengine: stm32: dmamux: fix device leak on route allocation Message-ID: References: <20251117161258.10679-1-johan@kernel.org> <20251117161258.10679-11-johan@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Nov 18, 2025 at 09:11:30AM +0100, Amelie Delaunay wrote: > On 11/17/25 17:12, Johan Hovold wrote: > > Make sure to drop the reference taken when looking up the DMA mux > > platform device during route allocation. > > > > Note that holding a reference to a device does not prevent its driver > > data from going away so there is no point in keeping the reference. > > > > Fixes: df7e762db5f6 ("dmaengine: Add STM32 DMAMUX driver") > > Cc: stable@vger.kernel.org # 4.15 > > Cc: Pierre-Yves MORDRET > > Signed-off-by: Johan Hovold > > Reviewed-by: Amelie Delaunay Thanks for reviewing. Johan