From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063891; b=YQV3Z8JrVoTO1VJdek16qHEZVVcURom6yVgWGQFapQImy46e6qg6CjzDpaTM6kvpaDUN BodxlLVt/yqZFQ33oriyiv9orxAmTRnd6F147nllDb2Y3VByGhPwWDGYHb/kYzUrX2Rg7 F3tdXTGU0o8WRX3qxmusE/7rZjMIgu6M+9iiA3UIw6CWSRXZbt//uiX58QAsnD7GLdCDZ AgJ2P2B/6BSKWpAwBeJ9MJIb0OiU8zi8wtROOIQ8kd1CxLzDsxykLmHSLjoJa4aRNScnI pVNgtGk2koBu5NqZVqpNoT2YNrVVtxqHp4G1OwjvfXgEnNk9x6d0QcXsaupHTmxBzXA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063891; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=UjVqnk/i88jVJpV8Mog87M6X5f3AOpxAqVlynDJsuyk=; b=uxk8qNhdjVj1yV0J1wm0Ps9kW7COTwPBMc0Nc1xezYxWJAPKBJM2Fk49UvL6/o/NXNa4 iX1w5h7y/OCN10kokGJpTVPSPupXMhIhNrcr2j4xOgyQJSZwFEtBGZhZH0B4JCLe9gM8v jd80CC+UuFPQYTBaoXAy9YYy/2tyLY8v3LzDuTLnTSqvfbKee2gIVnOzxvpnhQxqv+pDP ACfOhsye1EW42dGYEHg3kJem+v8IV5LnPkYwn4DLTktTW1n6shQRUaeTj7CooDg2Nvv9C PQOQJyTULjV/LLFwx720wL6uJfySFeEDTKKTV2oK9YOTwmNOTcUCSl1RqGoHou09NZg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=ommwjXKD; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8FE57606B8AD; Sat, 7 Nov 2026 15:04:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=ommwjXKD Received: by smtp.kernel.org (Postfix) with ESMTPSA id D56771F0089F; Sat, 7 Nov 2026 15:04:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063891; bh=UjVqnk/i88jVJpV8Mog87M6X5f3AOpxAqVlynDJsuyk=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ommwjXKD11KOT7U4WBryrfPGku+azfXVM/c0tJYR2mN0iobENngQLEIqKBn47j0wl XWG1MRZhoTv4d4gLMEMjnEXsx/e37cVQDGpO0fncLx1uiR+JYtYrISzad9AIrUJw6G KohSKhEYdLs0Jt/XZRDFXVjAvtkJXM30FN4eeoq8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Runyu Xiao , Hans Verkuil , Sasha Levin Subject: [PATCH 7.3 0094/1257] media: saa7146: Initialize interrupt lock before requesting IRQ Date: Sat, 7 Nov 2026 08:39:50 -0500 Message-ID: <20261107134941.959675310@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134939.434104957@linuxfoundation.org> References: <20261107134939.434104957@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.3-stable review patch. If anyone has any objections, please let me know. ------------------ From: Runyu Xiao [ Upstream commit e07c75a6bc4adf1ed09ede31756261e2c6bdede5 ] The saa7146 interrupt handler can call SAA7146_IER_DISABLE(), which serializes register access with dev->int_slock. request_irq() allows the shared handler to run before saa7146_init_one() reaches the current lock initialization block. Initialize dev->int_slock before requesting the interrupt so every handler path sees an initialized lock. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Assisted-by: Codex:GPT-5 Signed-off-by: Runyu Xiao Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/common/saa7146/saa7146_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/common/saa7146/saa7146_core.c b/drivers/media/common/saa7146/saa7146_core.c index c297d019f2b3f..70d6ca00513f8 100644 --- a/drivers/media/common/saa7146/saa7146_core.c +++ b/drivers/media/common/saa7146/saa7146_core.c @@ -340,6 +340,8 @@ static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent goto out; } + spin_lock_init(&dev->int_slock); + /* create a nice device name */ sprintf(dev->name, "saa7146 (%d)", saa7146_num); @@ -425,7 +427,6 @@ static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent dev->ext = ext; mutex_init(&dev->v4l2_lock); - spin_lock_init(&dev->int_slock); spin_lock_init(&dev->slock); mutex_init(&dev->i2c_lock); -- 2.53.0