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| Started by | Mauro Carvalho Chehab <mchehab@s-opensource.com> |
|---|---|
| First post | 2017-08-28 15:00 +0200 |
| Last post | 2017-08-29 10:40 +0200 |
| Articles | 2 — 2 participants |
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[PATCH v5 3/7] media: open.rst: remove the minor number range Mauro Carvalho Chehab <mchehab@s-opensource.com> - 2017-08-28 15:00 +0200
Re: [PATCH v5 3/7] media: open.rst: remove the minor number range Sakari Ailus <sakari.ailus@iki.fi> - 2017-08-29 10:40 +0200
| From | Mauro Carvalho Chehab <mchehab@s-opensource.com> |
|---|---|
| Date | 2017-08-28 15:00 +0200 |
| Subject | [PATCH v5 3/7] media: open.rst: remove the minor number range |
| Message-ID | <ujrO2-5H0-1@gated-at.bofh.it> |
minor numbers use to range between 0 to 255, but that was changed a long time ago. While it still applies when CONFIG_VIDEO_FIXED_MINOR_RANGES, when the minor number is dynamically allocated, this may not be true. In any case, this is not relevant, as udev will take care of it. So, remove this useless misinformation. Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> --- Documentation/media/uapi/v4l/open.rst | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/Documentation/media/uapi/v4l/open.rst b/Documentation/media/uapi/v4l/open.rst index fc0037091814..96ac972c1fa2 100644 --- a/Documentation/media/uapi/v4l/open.rst +++ b/Documentation/media/uapi/v4l/open.rst @@ -19,11 +19,10 @@ helper functions and a common application interface specified in this document. Each driver thus loaded registers one or more device nodes with major -number 81 and a minor number between 0 and 255. Minor numbers are -allocated dynamically unless the kernel is compiled with the kernel -option CONFIG_VIDEO_FIXED_MINOR_RANGES. In that case minor numbers -are allocated in ranges depending on the device node type (video, radio, -etc.). +number 81. Minor numbers are allocated dynamically unless the kernel +is compiled with the kernel option CONFIG_VIDEO_FIXED_MINOR_RANGES. +In that case minor numbers are allocated in ranges depending on the +device node type. The existing V4L2 device node types are: -- 2.13.5
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| From | Sakari Ailus <sakari.ailus@iki.fi> |
|---|---|
| Date | 2017-08-29 10:40 +0200 |
| Message-ID | <ujKdY-i4-3@gated-at.bofh.it> |
| In reply to | #1721589 |
On Mon, Aug 28, 2017 at 09:53:57AM -0300, Mauro Carvalho Chehab wrote: > minor numbers use to range between 0 to 255, but that > was changed a long time ago. While it still applies when > CONFIG_VIDEO_FIXED_MINOR_RANGES, when the minor number is > dynamically allocated, this may not be true. In any case, > this is not relevant, as udev will take care of it. > > So, remove this useless misinformation. > > Acked-by: Hans Verkuil <hans.verkuil@cisco.com> > Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> -- Sakari Ailus e-mail: sakari.ailus@iki.fi
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