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 72D9133343F; Mon, 29 Dec 2025 16:33:05 +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=1767025987; cv=none; b=bXf0m1Q9w7e7sU87Go6IXlZRCr1FDCruHQ9RQ/SIU5+MyJYhCmYl3OeF+om3D9d4+ovFRx5vx1ej+t3a4gK+Loa2pvwzL17aUPMF3ug9dN26GT1Neh/cTuEeczm7b0iGP/Utzh9rRaY0GpOswA9+lo873fuDc+eYEAti2rVwlao= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767025987; c=relaxed/simple; bh=PPnPsfAOaQIs+Ofd6D63a+VAVxXhLbidXHbthHpdqVc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lmnn1WyAUHED3ONg+ugNpCnKGHH2tDVFR2nJgj9lrs3su8fNCUstGXQVqYJo4AHLwt6WL21pKm1otoEVFRsEGwj26lo3YCNHoDsT3qNBjxp3TXt5NkVnHA2UEab/vlJv4qplz/JH5oPj1CvURJ+dNLcGwpEbB/9F2mbk4pAUqYE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OqveLWoc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="OqveLWoc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90D7CC4CEF7; Mon, 29 Dec 2025 16:33:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767025984; bh=PPnPsfAOaQIs+Ofd6D63a+VAVxXhLbidXHbthHpdqVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OqveLWoc8jBILCdjmxc32UeHU5QpD53BZmXYysf+yyjylMsckLdVhTR46SUQobUqI PyVuC2Fy3i7Zmk1ySFLqWiXyWkK8Dnpfu+6eExtbPfpGn5/0muax2G4sf53SCAdDCM nZm3lw4DsmbSnIg2tsbMCcjLgD18kVXbszNQ44Uw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Peter Griffin , Johan Hovold , Krzysztof Kozlowski Subject: [PATCH 6.18 406/430] soc: samsung: exynos-pmu: fix device leak on regmap lookup Date: Mon, 29 Dec 2025 17:13:28 +0100 Message-ID: <20251229160739.252462061@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251229160724.139406961@linuxfoundation.org> References: <20251229160724.139406961@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit 990eb9a8eb4540ab90c7b34bb07b87ff13881cad upstream. Make sure to drop the reference taken when looking up the PMU device and its regmap. Note that holding a reference to a device does not prevent its regmap from going away so there is no point in keeping the reference. Fixes: 0b7c6075022c ("soc: samsung: exynos-pmu: Add regmap support for SoCs that protect PMU regs") Cc: stable@vger.kernel.org # 6.9 Cc: Peter Griffin Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20251121121852.16825-1-johan@kernel.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman --- drivers/soc/samsung/exynos-pmu.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/soc/samsung/exynos-pmu.c +++ b/drivers/soc/samsung/exynos-pmu.c @@ -346,6 +346,8 @@ struct regmap *exynos_get_pmu_regmap_by_ if (!dev) return ERR_PTR(-EPROBE_DEFER); + put_device(dev); + return syscon_node_to_regmap(pmu_np); } EXPORT_SYMBOL_GPL(exynos_get_pmu_regmap_by_phandle);