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[media] gen-errors.rst: document EIO

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Document the EIO error since this can happen anywhere anytime and applications
should be aware of this.

Also fix typo: exaustive -> exhaustive

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hans Verkuil 2016-12-16 07:22:08 -02:00 committed by Mauro Carvalho Chehab
parent 6ab1a322dc
commit 05a89739e9
1 changed files with 9 additions and 1 deletions
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10
Documentation/media/uapi/gen-errors.rst
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@ -94,9 +94,17 @@ Generic Error Codes
- Permission denied. Can be returned if the device needs write
permission, or some special capabilities is needed (e. g. root)
- .. row 11
- ``EIO``
- I/O error. Typically used when there are problems communicating with
a hardware device. This could indicate broken or flaky hardware.
It's a 'Something is wrong, I give up!' type of error.
.. note::
#. This list is not exaustive; ioctls may return other error codes.
#. This list is not exhaustive; ioctls may return other error codes.
Since errors may have side effects such as a driver reset,
applications should abort on unexpected errors, or otherwise
assume that the device is in a bad state.