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Subject[PATCH 2.6] add class support to dsp56k.c

Here is a patch that adds sysfs class support to /drivers/char/dsp56k.c

I dont have the hardware or a cross compiler... If someone could test it
I would appreciate it.

Thanks.

Hanna
IBM Linux Technology Center
-----
diff -Nrup linux-2.6.5/drivers/char/dsp56k.c linux-2.6.5p/drivers/char/dsp56k.c
--- linux-2.6.5/drivers/char/dsp56k.c 2004-04-03 19:37:07.000000000 -0800
+++ linux-2.6.5p/drivers/char/dsp56k.c 2004-04-07 14:44:28.000000000 -0700
@@ -35,6 +35,7 @@
#include <linux/init.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/smp_lock.h>
+#include <linux/device.h>

#include <asm/atarihw.h>
#include <asm/traps.h>
@@ -149,6 +150,8 @@ static struct dsp56k_device {
int tx_wsize, rx_wsize;
} dsp56k;

+static struct class_simple *dsp56k_class;
+
static int dsp56k_reset(void)
{
u_char status;
@@ -502,6 +505,8 @@ static char banner[] __initdata = KERN_I

static int __init dsp56k_init_driver(void)
{
+ int err = 0;
+
if(!MACH_IS_ATARI || !ATARIHW_PRESENT(DSP56K)) {
printk("DSP56k driver: Hardware not present\n");
return -ENODEV;
@@ -511,12 +516,28 @@ static int __init dsp56k_init_driver(voi
printk("DSP56k driver: Unable to register driver\n");
return -ENODEV;
}
+ dsp56k_class = class_simple_create(THIS_MODULE, "dsp56k");
+ if (IS_ERR(dsp56k_class)) {
+ err = PTR_ERR(dsp56k_class);
+ goto out_chrdev;
+ }
+ class_simple_device_add(dsp56k_class, MKDEV(DSP56K_MAJOR, 0), NULL, "dsp56k");

- devfs_mk_cdev(MKDEV(DSP56K_MAJOR, 0),
+ err = devfs_mk_cdev(MKDEV(DSP56K_MAJOR, 0),
S_IFCHR | S_IRUSR | S_IWUSR, "dsp56k");
+ if(err)
+ goto out_class;

printk(banner);
- return 0;
+ goto out;
+
+out_class:
+ class_simple_device_remove(MKDEV(DSP56K_MAJOR, 0));
+ class_simple_destroy(dsp56k_class);
+out_chrdev:
+ unregister_chrdev(DSP56K_MAJOR, "sdp56k");
+out:
+ return err;
}
module_init(dsp56k_init_driver);

@@ -524,6 +545,8 @@ static void __exit dsp56k_cleanup_driver
{
unregister_chrdev(DSP56K_MAJOR, "dsp56k");
devfs_remove("dsp56k");
+ class_simple_device_remove(MKDEV(DSP56K_MAJOR, 0));
+ class_simple_destroy(dsp56k_class);
}
module_exit(dsp56k_cleanup_driver);

-
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