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=1794062956; b=IZY6xwSJ7xCjLmLydabtfRdGQZXAqwDvbLxUE8BYrO56tSRJMdmmDvl0virsYUn4Lt+M PHY5q05/jkV0uXa5gg0tc67HJ8GiEtz2YRzKXKJrm3Z9r0Gzu2owInvPZkn4w6hF9nofH bf763THm9+S2UiprzufEpxH0elvnUPp/YbPwAmL5DoSQ0R5pDDPuoOJB6XcciCZQctM4u iPY5++c8VMiuy8+QLKD2cYD8vRigV5aBS3yMxTWicUJ1IaWVzDldoqsllUp8yfmAizZVD QGY1W8Vh2brzrd/ElrQL+mqREwOFf97B+OjT+hTFvWV590oQEGzDNbWRek4xkt/Sazg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794062956; 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=sL6T9eXW1aYhfsy0qW6x103AQoi9mUSVy+AlfjG8Kw8=; b=Y5yGz4rrZ3KTXZ+oe1vIb9Q9xbEZXJrxV41ms9Dy2UnFAL9LdbkrsQaNbYK4UY8v+LcI /UTUuSw9pSZgwpQqvE5WQaKk1I6cluW77s7qF9aoqeF24i9yQE7o3Olx4F7ttzioIVbj1 Jx9wPxOAF3Q+BILQHSJEwGNfL2MQ9y8BTD2/0+sJGK8CDUtVpmT+kpaNrq9/hb0IDvkOF GOXeTlWoyy4GvI4KTWDCJvX0YDl63yuXWWa/s+gvuRbQnr5VWsi752QjhNLXR/ys91G3x /ZVdDDMFJHxs6fcaMAC6Q07rvtXEI6djDG1p7HTQM+CWatTewtyUgSJvOxOZyW/p+dw== 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=R1zbjbqU; 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 BAA44606A330; Sat, 7 Nov 2026 14:49:15 +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=R1zbjbqU Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28C301F0089F; Sat, 7 Nov 2026 14:49:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794062955; bh=sL6T9eXW1aYhfsy0qW6x103AQoi9mUSVy+AlfjG8Kw8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=R1zbjbqUqW6ZXM7o80IGP0DJeNhJMV+uUw0n5ej3o54Zf2drmHJdvImDuGy+3X2r1 gryEgihZCUCnSmVU4QoBaaqAraEDsobnCQD7GRq8wgx6K957f4zUmrfY//SK5nxTBC 7jJW/HXN7QLsbIGJsPtD5jcYRWvImBXKRdtBiieo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Sean Young , Hans Verkuil , Sasha Levin Subject: [PATCH 6.18 183/869] media: meson-ir-tx: Prevent divide by zero in meson_irtx_prepare_pulse() Date: Sat, 7 Nov 2026 08:47:45 -0500 Message-ID: <20261107134858.336041903@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@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 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sean Young [ Upstream commit 05d9c515cf13056875abbf73adb4a19dd7ba32eb ] If an excesively high carrier is set, meson_irtx_prepare_pulse() will cause a divide by zero if tb_us is 0. Prevent such a carrier from being set. Fixes: 49be1c78d575 ("media: rc: introduce Meson IR TX driver") Signed-off-by: Sean Young Cc: stable@vger.kernel.org Acked-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/rc/meson-ir-tx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/rc/meson-ir-tx.c b/drivers/media/rc/meson-ir-tx.c index 1ab898069e67f..a0d07da09f67a 100644 --- a/drivers/media/rc/meson-ir-tx.c +++ b/drivers/media/rc/meson-ir-tx.c @@ -219,6 +219,9 @@ static int meson_irtx_set_carrier(struct rc_dev *rc, u32 carrier) if (carrier == 0) return -EINVAL; + if (!DIV_ROUND_CLOSEST(USEC_PER_SEC, carrier)) + return -EINVAL; + ir->carrier = carrier; meson_irtx_set_mod(ir); -- 2.53.0