RE: skull_read (device driver) - incompatible pointer type

["Dhiman, Gaurav" <Gaurav.Dhiman@xxxxxx>]

You are not using the right function decelerator.
Use the following declaration for read function:

	ssize_t (*read) (struct file *, char *, size_t, loff_t *);

Use this in definition and decleration of read function.

Regards,
Gaurav


-----Original Message-----
From: kernelnewbies-bounce@xxxxxxxxxxxx
[mailto:kernelnewbies-bounce@xxxxxxxxxxxx] On Behalf Of Shakthi Kannan
Sent: Thursday, August 05, 2004 4:24 PM
To: kernelnewbies@xxxxxxxxxxxx
Subject: skull_read (device driver) - incompatible pointer type

Greetings!

I am a new member and this is my first post.

I have written a sample device driver (on 2.6.5-mm1 kernel) and I am
getting this "read.c:45: warning: initialization from incompatible
pointer type" while compiling the code. Everything works in the code,
except the read function. The complete problem and code can be viewed
here:

http://www.linuxforum.com/forums/index.php?showtopic=87071

I have declared the skull_fops like this and the line 45 is the line
containing the "read: skull_read":

struct file_operations skull_fops = {
read: skull_read,
open: skull_open,
release: skull_release,
};

I have used the skull_read function like this:

int skull_read (struct inode *inode, struct file *file, char *buffer,
int count)

I would appreciate if you can tell me what is the error and how I can
get this working.

Thanks,

K Shakthi

-- 
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