From nobody Tue Sep 29 11:55:30 2026 Received: from mail-pj1-f45.google.com (mail-pj1-f45.google.com [209.85.216.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 18D2E3793B6 for ; Sat, 8 Aug 2026 09:43:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786182213; cv=none; b=WvUKHT2JpeW2/53jCMX23b+C/UFrjkplrTKQXJTilfUa1LHXTvwBRLRpx4779neRU2xi1HlWs3w5Ma2GC0M7tLngqmtFhujupTOmaJ7TFDCNKdG+rE03U/IclOW+OIOtpoErkH0pR+xkXwknLIfz3E8vLkndj7486+tRBQusFxQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786182213; c=relaxed/simple; bh=r6nfrHf9VWnHnAVX3pP+NYypBFwJru0XwFToKW5t2DY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=P9EjyuSuz7bFcA5woD4thEfhC7bQXAUY01t5hvMwNbDa/bGl9cqhnYU+//a3QtteRVgAfluTjEM8Wc71zjhUkGyPXtSiyTFsOqffprJBwM0d2Imd0H9/3WIcv6IDf93ahfy8GdIV/F6P6zjQfEmOndxEQQNl7d/ZoSpyo8Ojm3c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=hA6gL1nG; arc=none smtp.client-ip=209.85.216.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="hA6gL1nG" Received: by mail-pj1-f45.google.com with SMTP id 98e67ed59e1d1-38e69bdb0fcso317282a91.1 for ; Sat, 08 Aug 2026 02:43:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1786182211; x=1786787011; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=fDbi4zALnFhUD4L9Nk6WABMkAbrLbdj/pPHftS8rUB0=; b=hA6gL1nGLJwB0r6Ykkti04RzpX9yCIaB8wtGoSLqt3PKQG6gb1KPvSg+UWMRiCtltW ySLX2C2BnQcVwOCWPzrB4uZ9HM4Fc3NDKTpSbqGttN1xCxg7eJxSHreFx1tUpGRO2JcS JCFEr2CiGryD6k5i7ZmQdj8HN4LVOhjM8lQHDyL656AEWHi3LDFyyEB8T2fTOjn05nAi Ov2qSjCMbcG1O5+tZBY/zQv6RDIEfBvA7iXZ/gMl5MHF81hCW+f2lnnWHsLxd4nSjVmY 4/Lkck8R1bzFhNEA5dTsVmd5SoUqA1Q4xOW/NeyOg+HJt6sGp2/hr1izFz8AZphOt9vN Euow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786182211; x=1786787011; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=fDbi4zALnFhUD4L9Nk6WABMkAbrLbdj/pPHftS8rUB0=; b=T0wlBbsCVaROOXIf4baESK4YEfbQqyH478bveXLC0QcAeTKcKi427sLkFw4+BtaEmx /z+gtUxAxX3Y0sDMgLwR4aDAnGQBKJUx5YuZHusS1Vt2vzv4+072Bibp328sExWV7kn8 +3mxmNLD9nrSRjq/eyjVd3oEXFAspk6VuAoqPslWCov5vYbSj6KgFUuEO7uhdXaeuyKW lqYZKjURjniigjtEaIlHLwdUw+bVL9f+Pih3Pl/CcrTAJQ8YuF1TJ+wgCYQKHH4HkfYi 71o88x4Wktb1HuAzZQ1Glq/hPOrl4X3010qYnBHwvX3pitQmhPahfYnK+wyEW0DHw8nt eeag== X-Forwarded-Encrypted: i=1; AHgh+RrKFekl5oMtnHS+CD4TprCfcPdeCF0LXFr9clwuDQ9j/025O52EohoRWD7u15PC7gRjsq+aLScB3RmkDbM=@vger.kernel.org X-Gm-Message-State: AOJu0YwtjVP5Dy4n1BNLo0Lw3bS5OX4z71qXmKGwwlacBOS2FFstm+Sf e2ItzQta4SzDuRzEUXOVPpdQR/paj/pPdAHhUf3WgcMg6YzJ3ke21848 X-Gm-Gg: AR+sD13a37Od3Tg8tuHWQ4Zj+AL5kvLuYPN5yfSm5YekHOFtDHLScAAhQnkMVFB4xtv h2Yzq3EDvptZ47idQaGSLTKykdDD9jIA1Sh2yD+xxaEPCWNVZEBDfl5ul8g6+p/eORtZi0iGd4T R1SUDFVEGqcs5nc5qFwxcxYbG+IVHLkpcdF3vhH6qayEVwSN76oPRl7qxhwloQfUtcI2Sy4mhMg H7jF1GNXIZAvyMGHUo3V7BrCgS00tgIIbuDLDAqiNbCAQ7gSwb1qlIOhPwkLd9rntEPyh0RrZT1 cS2KNiFvRar6blMiv4v8BuJxKwyXiMz8W29S1SrUk5DnMREdhh22x6AdXv/BKNNAM4jmPuuXVGM gobL+H1n4wItLpaGHeUfSKtHdS4Yv/fJ+57rNCIOHvx89KNgBA71TZSCoZ5fOkMwHgvB71723m6 Xr4iauXiwrlKW/OQq9yZOy1n7br7IllLnbFYFzhdSN8fW8VLs+XiTSfQ== X-Received: by 2002:a05:6a20:b598:b0:3c8:f342:132c with SMTP id adf61e73a8af0-3cb85e99264mr35264761637.11.1786182211362; Sat, 08 Aug 2026 02:43:31 -0700 (PDT) Received: from lgs.. ([2001:250:5800:1000::f280]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cbe8f1b3eb2sm1707505a12.13.2026.08.08.02.43.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Aug 2026 02:43:30 -0700 (PDT) From: Guangshuo Li To: Herbert Xu , "David S. Miller" , Maxime Coquelin , Alexandre Torgue , Thorsten Blum , Guangshuo Li , "lionel.debieve@st.com" , linux-crypto@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Subject: [PATCH] crypto: stm32/hash: fix autosuspend cleanup during teardown Date: Sat, 8 Aug 2026 17:41:14 +0800 Message-ID: <20260808094114.2750088-1-lgs201920130244@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" stm32_hash_probe() calls pm_runtime_use_autosuspend(), but neither the probe failure path nor stm32_hash_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: 8b4d566de6a5 ("crypto: stm32/hash - Add power management support") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li Reviewed-by: Maxime M=C3=A9r=C3=A9 --- drivers/crypto/stm32/stm32-hash.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32= -hash.c index dada5951082c..12fa1a8f67eb 100644 --- a/drivers/crypto/stm32/stm32-hash.c +++ b/drivers/crypto/stm32/stm32-hash.c @@ -2456,6 +2456,7 @@ static int stm32_hash_probe(struct platform_device *p= dev) if (hdev->dma_lch) dma_release_channel(hdev->dma_lch); err_reset: + pm_runtime_dont_use_autosuspend(dev); pm_runtime_disable(dev); pm_runtime_put_noidle(dev); =20 @@ -2482,6 +2483,7 @@ static void stm32_hash_remove(struct platform_device = *pdev) if (hdev->dma_lch) dma_release_channel(hdev->dma_lch); =20 + pm_runtime_dont_use_autosuspend(hdev->dev); pm_runtime_disable(hdev->dev); pm_runtime_put_noidle(hdev->dev); =20 --=20 2.43.0