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 -- Gentoo Linux 1.4 (2.6.5-mm1) / FreeBSD UNIX 4.9 on IBM Thinkpad T41 (Pentium M 1.40GHz-512 MB-40 GB). Server:irc.freenode.net #linuxforum #linux-india #gentoo Nick:mbuf -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
