Re: error in a compiling simple character device driver

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Manoj Gupta <manoj334@xxxxxxxxx> wrote:
> Change
> char *memory_buffer[];
> to
> char *memory_buffer;

sri <bskmohan@xxxxxxxxx> wrote:
>  But can you explain why that change worked?

The change works because kmalloc returns the address of allocated
memory that is pointer to a character array rather than returning a
character array.    In general functions return pointers to arrays,
which are not typically passed by value in C.

But what the heck does "error: 'memory_buffer' has an incomplete type"
mean anyway?    I'm always puzzled by that error message, and I am a
native English speaker!    Experience has shown that "has an
incomplete type" does mean incorrect assignment to a pointer, but I
can't guess what an "incomplete type" is!

-- 
Alison Chaiken
(650) 279-5600  (cell)
             http://www.exerciseforthereader.org/
The only real deadline in life is the one where you actually die. -- Eliot D.

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