From patchwork Wed Aug 7 07:22:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Verkuil X-Patchwork-Id: 13755918 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 07C2F1C7B7D for ; Wed, 7 Aug 2024 07:22:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723015333; cv=none; b=Ascwpl3fZ0cP6N2ZlrlGx4augBszen/3Y9TMpVq8RLnTrsDbyGm+x2QrRGYk4Bgo6A76aOpgT8yzxBXKgqVKsjAxMk32jDU8Hacg6iIvDVB5Do1ZEApNJlNT/u5W7bqYkZYBNBg9Qtdl3qZxg9IHewfUor2/JbObnG7Zr7qM6wM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723015333; c=relaxed/simple; bh=DE/pRojyyPMxn0P1Fez2MzyaAcJqp+gHtFi7swcXtBA=; h=Message-ID:Date:MIME-Version:To:From:Subject:Content-Type; b=p++rKzBiU66Qj976TXmURzUGYXD/RK4DWrOYv838jEk6ygaWKdFslLDT+m2Ro6RpkgrFkffLP/Ldkhy/pod1NEBJk/kXRQPqOz4iV0iDmhhimJT7oaFcRCrObG03jwuroPOA5qm4oXt01LPV8hq5Tvw/EYMLS0UUpcGYo1q6EV0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5BB70C4AF0B for ; Wed, 7 Aug 2024 07:22:12 +0000 (UTC) Message-ID: Date: Wed, 7 Aug 2024 09:22:10 +0200 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US, nl To: Linux Media Mailing List From: Hans Verkuil Subject: [PATCH] media: uapi/linux/cec.h: cec_msg_set_reply_to: zero flags The cec_msg_set_reply_to() helper function never zeroed the struct cec_msg flags field, this can cause unexpected behavior if flags was uninitialized to begin with. Signed-off-by: Hans Verkuil Fixes: 0dbacebede1e ("[media] cec: move the CEC framework out of staging and to media") Cc: --- include/uapi/linux/cec.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/cec.h b/include/uapi/linux/cec.h index 894fffc66f2c..b2af1dddd4d7 100644 --- a/include/uapi/linux/cec.h +++ b/include/uapi/linux/cec.h @@ -132,6 +132,8 @@ static inline void cec_msg_init(struct cec_msg *msg, * Set the msg destination to the orig initiator and the msg initiator to the * orig destination. Note that msg and orig may be the same pointer, in which * case the change is done in place. + * + * It also zeroes the reply, timeout and flags fields. */ static inline void cec_msg_set_reply_to(struct cec_msg *msg, struct cec_msg *orig) @@ -139,7 +141,9 @@ static inline void cec_msg_set_reply_to(struct cec_msg *msg, /* The destination becomes the initiator and vice versa */ msg->msg[0] = (cec_msg_destination(orig) << 4) | cec_msg_initiator(orig); - msg->reply = msg->timeout = 0; + msg->reply = 0; + msg->timeout = 0; + msg->flags = 0; } /**