[patch] staging: comedi: cleanup comedi_recognize()
Ian Abbott
abbotti at mev.co.uk
Wed Jun 6 09:28:24 UTC 2012
On 2012-06-05 12:01, Dan Carpenter wrote:
> On Tue, Jun 05, 2012 at 12:06:10PM +0200, walter harms wrote:
>> Hi all,
>> the patch is fine with me but i have a few basic questions:
>>
>> Why the (void *) at all ? it returns a name what is a const char *.
>>
>
> We're really returning a pointer to a private struct, it's just that
> the first element on the struct always has to be a pointer to char *.
To be pedantic, it's really returning a pointer to some member of type
'const char *' within a private struct. To make life easier for
themselves, those drivers make that the first member of the private
struct so a void pointer to the member is also a void pointer to the struct.
--
-=( Ian Abbott @ MEV Ltd. E-mail: <abbotti at mev.co.uk> )=-
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