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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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