On Thu, 23 Jun 2011 13:54:56 +0200, Amit Nagal <helloin.amit@xxxxxxxxx>
wrote:
2011/6/23 Michal Nazarewicz <mina86@xxxxxxxxxx>:
On Thu, 23 Jun 2011 13:13:58 +0200, Amit Nagal <helloin.amit@xxxxxxxxx>
since in skel_open() , file->private_data saves dev with (
file->private_data = dev ) statement ,
Not always. There are two “goto exit” statements that will skip setting
of the file->private_data.
Ya , but "goto exit" are there to handle error conditions , which
will finally lead to failure of open() call in userspace .
since open() fails , application wont get valid fd for calling
close() , and thus skel_release won't execute at all .
Ah, right. Well, in that case I suspect it's just a sanity check.
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