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Re: [PATCH 0/8] [media] v4l2-core: Fine-tuning for some function implementations

From Hans Verkuil <hverkuil@xs4all.nl>
Newsgroups linux.kernel
Subject Re: [PATCH 0/8] [media] v4l2-core: Fine-tuning for some function implementations
Date 2017-01-02 16:00 +0100
Message-ID <sVcfD-8dX-11@gated-at.bofh.it> (permalink)
References <sSKnv-19u-3@gated-at.bofh.it> <sSYA9-1xE-9@gated-at.bofh.it>
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On 12/27/16 12:51, Sakari Ailus wrote:
> Hi Markus,
>
> On Mon, Dec 26, 2016 at 09:41:19PM +0100, SF Markus Elfring wrote:
>> From: Markus Elfring <elfring@users.sourceforge.net>
>> Date: Mon, 26 Dec 2016 21:30:12 +0100
>>
>> Some update suggestions were taken into account
>> from static source code analysis.
>>
>> Markus Elfring (8):
>>   v4l2-async: Use kmalloc_array() in v4l2_async_notifier_unregister()
>>   v4l2-async: Delete an error message for a failed memory allocation in v4l2_async_notifier_unregister()
>>   videobuf-dma-sg: Use kmalloc_array() in videobuf_dma_init_user_locked()
>>   videobuf-dma-sg: Adjust 24 checks for null values
>>   videobuf-dma-sg: Move two assignments for error codes in __videobuf_mmap_mapper()
>>   videobuf-dma-sg: Improve a size determination in __videobuf_mmap_mapper()
>>   videobuf-dma-sg: Delete an unnecessary return statement in videobuf_vm_close()
>>   videobuf-dma-sg: Add some spaces for better code readability in videobuf_dma_init_user_locked()
>
> I don't really disagree with the videobuf changes as such --- the original
> code sure seems quite odd, but I wonder whether we want to do this kind of
> cleanups in videobuf. Videobuf will be removed likely in not too distant
> future; when exactly, Hans can guesstimate better than me. Cc him.
>

The videobuf code is frozen as far as I am concerned, and I won't pick up
these cleanup patches. While they look perfectly reasonable, I don't want
to risk any breakage there. The last thing I want to do is to have to debug
in the videobuf code.

Sorry Markus, just stay away from the videobuf-* sources.

Regards,

	Hans

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[PATCH 0/8] [media] v4l2-core: Fine-tuning for some function  implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2016-12-26 21:50 +0100
  [PATCH 6/8] [media] videobuf-dma-sg: Improve a size determination in  __videobuf_mmap_mapper() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-12-26 22:00 +0100
  [PATCH 8/8] [media] videobuf-dma-sg: Add some spaces for better code  readability in videobuf_dma_init_user_locked() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-12-26 22:00 +0100
  [PATCH 3/8] [media] videobuf-dma-sg: Use kmalloc_array() in  videobuf_dma_init_user_locked() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-12-26 22:00 +0100
  [PATCH 7/8] [media] videobuf-dma-sg: Delete an unnecessary return  statement in videobuf_vm_close() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-12-26 22:00 +0100
  [PATCH 5/8] [media] videobuf-dma-sg: Move two assignments for error  codes in __videobuf_mmap_mapper() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-12-26 22:00 +0100
  Re: [PATCH 0/8] [media] v4l2-core: Fine-tuning for some function  implementations Sakari Ailus <sakari.ailus@iki.fi> - 2016-12-27 13:00 +0100
    Re: [PATCH 0/8] [media] v4l2-core: Fine-tuning for some function  implementations Hans Verkuil <hverkuil@xs4all.nl> - 2017-01-02 16:00 +0100

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