From: 再回首 <308123027@qq.com>
To: linux-media <linux-media@vger.kernel.org>
Subject: soc camera driver module may case memory leak
Date: Mon, 5 Nov 2012 22:38:42 +0800 [thread overview]
Message-ID: <tencent_64608E82650520C00B66909A@qq.com> (raw)
Dear sir:
why not call "videobuf_mmap_free",when device close call "soc_camera_close" in linux-2.6.x;do the same in linux-3.x.x?
video capture flow:
1)open
2)set fmt
3)request buffer-->__videobuf_mmap_setup-->videobuf_alloc_vb(q)
4)mmap
5)enqueue, dequeue
6)unmap
7)close--->soc_camera_close-->?should call:videobuf_mmap_free
NOTE:
I have reviewed all the code, found:soc_camera_driver device driver coders has no way(callback function) to call videobuf_mmap_free; it will case memory leak.
next reply other threads:[~2012-11-05 14:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-05 14:38 再回首 [this message]
2012-11-06 11:30 ` soc camera driver module may case memory leak Guennadi Liakhovetski
2012-11-05 14:46 =?gb18030?B?1Nm72MrX?=
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