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SubjectRe: Trying to fix 3dfx.o + question about char drivers..
Michael Bacarella wrote:
> So, I upgrade to 2.4.0 and it's cool, except that I can't do
> anything neat with my voodoo3 anymore. I've been looking
> for a solution for weeks but to no avail. 3dfx's web site
> looks like it's gone and nothing on lk about it.
>
> The process calls ioctl() after opening /dev/3dfx. That ioctl() triggers
> an mmap() call, the driver gets addresses it's totally not expecting,
> and it returns -EPERM.

struct file_operations has changed in 2.4.0. The following patch for 3dfx
module fixes the structure initialization and makes it work just fine.

--- 3dfx_driver.c Sun Apr 9 03:44:10 2000
+++ 3dfx_driver.c Fri Feb 23 22:42:06 2001
@@ -707,25 +707,10 @@
#endif /* HAVE_MTRR */

static struct file_operations fops_3dfx = {
- NULL, /* llseek (2.1) / lseek (2.0) */
- NULL, /* read */
- NULL, /* write */
- NULL, /* readdir */
- NULL, /* poll (2.1) / select (2.0) */
- ioctl_3dfx, /* ioctl */
- mmap_3dfx, /* mmap */
- open_3dfx, /* open */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 1, 118)
- NULL, /* flush (2.1.118+) */
-#endif
- release_3dfx, /* release */
- NULL, /* fsync */
- NULL, /* fasync */
- NULL, /* check_media_change */
- NULL, /* revalidate */
-#ifdef KERNEL_VER_2_1
- NULL /* lock (2.1) */
-#endif
+ ioctl: ioctl_3dfx,
+ mmap: mmap_3dfx,
+ open: open_3dfx,
+ release: release_3dfx
};

#ifdef MODULE
-
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