Greetings, I am trying to port a driver I wrote for the 2.2 series to 2.4. Not surprisingly, an attempted build generate a bunch of warnings and errors. However...I have searched extensively for some documentation or examples of making standalone modules for 2.4, and they do not seem to exist! Every online resource, including the LKMP: http://www.tldp.org/LDP/lkmpg/mpg.html ...seem to reference the 2.2 kernel. The code for chardev.c, here: http://www.tldp.org/LDP/lkmpg/node14.html ...is exactly what I need. If I could get chardev.c to compile, I could get my driver to compile, because they produce the same errors. I have attached the error output below. Does anyone have any advice, or know where I can find an example of a working, standalone character device driver for 2.4? Thanks! -Adam ---------------------------------------------------------------- gcc -Wall -DMODULE -D__KERNEL__ -DLINUX -c chardev.c In file included from /usr/include/linux/fs.h:23, from chardev.c:21: /usr/include/linux/string.h:8:2: warning: #warning Using kernel header in userland! chardev.c:41:45: asm/uaccess.h: No such file or directory chardev.c:75: warning: `struct file' declared inside parameter list chardev.c:75: warning: its scope is only this definition or declaration, which is probably not what you want chardev.c:75: warning: `struct inode' declared inside parameter list chardev.c: In function `device_open': chardev.c:86: warning: implicit declaration of function `printk' chardev.c:87: dereferencing pointer to incomplete type chardev.c:87: dereferencing pointer to incomplete type chardev.c:87: `amp' undeclared (first use in this function) chardev.c:87: (Each undeclared identifier is reported only once chardev.c:87: for each function it appears in.) chardev.c:87: parse error before ';' token chardev.c:92: `EBUSY' undeclared (first use in this function) chardev.c:121: warning: implicit declaration of function `sprintf' chardev.c:140: warning: implicit declaration of function `atomic_inc' chardev.c:140: union has no member named `usecount' chardev.c: At top level: chardev.c:154: warning: `struct file' declared inside parameter list chardev.c:154: warning: `struct inode' declared inside parameter list chardev.c: In function `device_release': chardev.c:170: warning: implicit declaration of function `atomic_dec' chardev.c:170: union has no member named `usecount' chardev.c: At top level: chardev.c:187: warning: `struct file' declared inside parameter list chardev.c: In function `device_read': chardev.c:206: `amp' undeclared (first use in this function) chardev.c:206: parse error before ';' token chardev.c:206: parse error before ')' token chardev.c: At top level: chardev.c:227: parse error before "return" chardev.c:239: warning: `struct file' declared inside parameter list chardev.c: In function `device_write': chardev.c:247: `EINVAL' undeclared (first use in this function) chardev.c: At top level: chardev.c:268: variable `Fops' has initializer but incomplete type chardev.c:269: warning: excess elements in struct initializer chardev.c:269: warning: (near initialization for `Fops') chardev.c:270: warning: excess elements in struct initializer chardev.c:270: warning: (near initialization for `Fops') chardev.c:271: warning: excess elements in struct initializer chardev.c:271: warning: (near initialization for `Fops') chardev.c:272: warning: excess elements in struct initializer chardev.c:272: warning: (near initialization for `Fops') chardev.c:273: warning: excess elements in struct initializer chardev.c:273: warning: (near initialization for `Fops') chardev.c:274: warning: excess elements in struct initializer chardev.c:274: warning: (near initialization for `Fops') chardev.c:275: warning: excess elements in struct initializer chardev.c:275: warning: (near initialization for `Fops') chardev.c:276: warning: excess elements in struct initializer chardev.c:276: warning: (near initialization for `Fops') chardev.c:278: warning: excess elements in struct initializer chardev.c:278: warning: (near initialization for `Fops') chardev.c:281: warning: excess elements in struct initializer chardev.c:281: warning: (near initialization for `Fops') chardev.c: In function `init_module': chardev.c:288: warning: implicit declaration of function `module_register_chrdev' chardev.c:290: `amp' undeclared (first use in this function) chardev.c:290: parse error before ';' token chardev.c: In function `cleanup_module': chardev.c:320: warning: implicit declaration of function `module_unregister_chrdev' chardev.c: At top level: chardev.c:268: storage size of `Fops' isn't known make: *** [chardev.o] Error 1 [ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
