From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: linux-doc@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Haren Myneni <haren@linux.ibm.com>,
Bagas Sanjaya <bagasdotme@gmail.com>,
Andrew Donnellan <ajd@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Akshay Gupta <akshay.gupta@amd.com>,
linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
hans@jjverkuil.nl, laurent.pinchart@ideasonboard.com,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Lee Jones <lee@kernel.org>
Subject: [PATCH 2/2] media: uapi: Document IOCTL number assignment
Date: Mon, 26 May 2025 14:17:32 +0300 [thread overview]
Message-ID: <20250526111732.487229-3-sakari.ailus@linux.intel.com> (raw)
In-Reply-To: <20250526111732.487229-1-sakari.ailus@linux.intel.com>
Document MC IOCTL number assignment in linux/media.h. In the past the
assignment up to 0x7f was missed so to prevent that from happening again,
document the value here as well.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
include/uapi/linux/media.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h
index 1c80b1d6bbaf..2808132fcf49 100644
--- a/include/uapi/linux/media.h
+++ b/include/uapi/linux/media.h
@@ -381,6 +381,10 @@ struct media_v2_topology {
*/
#define MEDIA_REQUEST_IOC_QUEUE _IO('|', 0x80)
#define MEDIA_REQUEST_IOC_REINIT _IO('|', 0x81)
+/*
+ * Don't allocate new IOCTL numbers past 0x8f, MC IOCTL number assignment ends
+ * there!
+ */
#ifndef __KERNEL__
--
2.39.5
next prev parent reply other threads:[~2025-05-26 11:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-26 11:17 [PATCH 0/2] Document Media Controller IOCTL number assignments Sakari Ailus
2025-05-26 11:17 ` [PATCH 1/2] Documentation: Bump media IOCTL reserved numbers Sakari Ailus
2025-05-26 11:48 ` Laurent Pinchart
2025-05-26 13:24 ` Sakari Ailus
2025-05-26 11:17 ` Sakari Ailus [this message]
2025-05-26 11:48 ` [PATCH 2/2] media: uapi: Document IOCTL number assignment Laurent Pinchart
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