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=1793211078; b=30zf97BS3jfm0d20z6VfczAUIyVdt/OpTq/7gMAP9PYETloh58kh630z3oUeBCEe3BXK 9hRtYBfxFt2QRsSJoe1KbHeAK8NM3B5yTJflStYIp4ld/OHzl4KY19Nl1O1S8K7otQn4H A5QQtJ5PVaDBhSuEXv4SCWqnTYCK6rn5Jvf0v1gfUJLNWxsotJ7kxNQXX+U8ckdRZUaqt ILstKNje0W03oVnkCBciaXWBR3hi6txo/0ofhggTmbXQt+kjOlBaCidjnMzs/gqi6Lu4N d/dRHWtcJYl2s5pej+s66oKsXLPKqF0gKyDMtqkdlYs2PISnOOKau4cXHI5X5W/rHrQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793211078; 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=tlH3QaRIAdGFz0VrGKodlW95/utR7qyVg4PDH0Q1xpQ=; b=YcL7Fokz8iY+EGdodl9641NNZlhei0zr8oWEtZv0l9N/meuEbAnehjwirzKA66Ut//gB 7c3LxYNjDAWaoi5xtOWAVcagqBBfKLD37EmJEwM+eWWU3U7XhELH4/XLymNhDok/83q52 EdaSUFDDJzgBEWza1qSrETxl/+nBkfw12pPat0fjtD6ES9q/I9gpkijviRhuGwgHFUYJF Sjh+0SU0t7nIjw2Gn+/cT32i5285Yyw59sVbPtNVrH5uqeSRThQNj+HJXfd7nbcEZCT2r z+0x6HIMPfYGWzWVks9bOUoum37XO0jM7eS4w9vDl4PA48Q1FTeutBg0QuH6CpRJ8sQ== 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=psEbUY8y; 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 2C72460A3803; Wed, 28 Oct 2026 18:11:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=psEbUY8y Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60CBC1F01828; Wed, 28 Oct 2026 18:11:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793211077; bh=tlH3QaRIAdGFz0VrGKodlW95/utR7qyVg4PDH0Q1xpQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=psEbUY8yVwxTSbI9ttdAQe4M6ofzVYo2K4NqKwFd6snjwUBW+SYtAvVXiqHOcUE2t SrH1CdAZVa+DOl0NWRhlBSJh/skBhQnWwRRtNO161fsQsjaIwYgPjY1LFnZ6BR5++g PoC+c6fnykWkC66XfmfwafuUUhAKoy9HCAlsLa48= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jiale Yao , Jonathan Cameron Subject: [PATCH 5.15 251/571] iio: accel: kxcjk-1013: reject duplicate event disable Date: Wed, 28 Oct 2026 17:56:38 +0100 Message-ID: <20261028170013.960044508@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170008.009143722@linuxfoundation.org> References: <20261028170008.009143722@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jiale Yao commit dd30c10ff60d2b30386c23bb7c61cc97f2385c97 upstream. The IIO core does not filter duplicate writes to the event enable attribute. kxcjk1013_write_event_config() already ignores repeated enable requests, but a repeated disable request still calls kxcjk1013_set_power_state(data, false), dropping a runtime PM reference that was not acquired for this request. This can underflow the runtime PM usage count and trigger a "Runtime PM usage count underflow" warning. Return early when the requested state already matches ev_enable_state. Fixes: b4b491c0832e ("iio: accel: kxcjk-1013: Support thresholds") Signed-off-by: Jiale Yao Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/iio/accel/kxcjk-1013.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/iio/accel/kxcjk-1013.c +++ b/drivers/iio/accel/kxcjk-1013.c @@ -1050,7 +1050,7 @@ static int kxcjk1013_write_event_config( struct kxcjk1013_data *data = iio_priv(indio_dev); int ret; - if (state && data->ev_enable_state) + if (state == data->ev_enable_state) return 0; mutex_lock(&data->mutex);