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=1794064059; b=kxZNMtUcVz4wwVn+a9QMzBQafZkJqN0SqG0kXl3hl0pIIlJc9ZFIma1ZihL18/gJ8qCu O3/LNv3bdZdE8i2mbXUHVaerpH49VPWEnd82EWl08ghz8Jesfl61urqMz/kzGJ8TUx8X0 3Rb3eBY59HW09AGVBce7ffisK/kPXupqsELSq7wRoKHOxCirGq7Cp2VkZPFLhWphfKZcg vXGjE2adUY97Dd+0AAEX3jzQ8iNJH62nhCDLNGpbp7/DHCfojgh92gYOGATlT6RZyWExr 6V5q1VQ0DxWRpBNpXw1dFDagf/9Q/X+32zvVLXC6eySi7VGofNoEcYErwIBt3qqvlzQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794064059; 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=GtbFIhOaAEbd1Lq0O6Bwfi6/VrPaxcuwVtHyEsqofq4=; b=Mpn+uQSAmViE/eNFGy6/q7yuRfQMkbj+Bxtmh58yqF6txoCbTo4WOChoCp9SN6J6xmoN HRCgwMIjfljvyThmHmW/G3FM1e+pB7ZPEF/s91Dv2JB6ta3zbh3aXWpc94QLPNwi2NDKr w0z9Cnf33JgKG76Hz8uHBS59118wLV9BerYuwntoqwWnJQmvS3ExHIlmlwE17nm0iSkCx Ze5PwOScoV0zk5UiQ923nexNwLcJHJZwiH/aYnzANV9moGuMDHMfplVCL7voAfnQPni6D VgDjiP6vOlIGJMiJWjP1+dSehT9ed63r9ZtMq1HBIXFYjFimF4nARapVgz2Yk1/bkIQ== 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=GBbFuGz2; 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 0823B606A9D4; Sat, 7 Nov 2026 15:07:39 +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=GBbFuGz2 Received: by smtp.kernel.org (Postfix) with ESMTPSA id A60C21F008A1; Sat, 7 Nov 2026 15:07:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794064058; bh=GtbFIhOaAEbd1Lq0O6Bwfi6/VrPaxcuwVtHyEsqofq4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=GBbFuGz2EbWuOkDjG2lshnykoUZioctekeRPZMBrrg4fu+r5e+kziKj8kjjkfkfIc uLY7ZbYXIiJnjBD19wZWTBbQtmqF13FdVhHathl4hiFisFmiTWeZ3/wj5nLfKFp8RE B2SF4p7L5n2qjAYmOuFriexwVz/V1UCwDVkjD6Po= 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 7.3 0229/1257] media: meson-ir-tx: Prevent divide by zero in meson_irtx_prepare_pulse() Date: Sat, 7 Nov 2026 08:42:05 -0500 Message-ID: <20261107134945.850093949@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: 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