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SubjectRe: [PATCH] Driver Core update for 2.6.6-rc1
Date
From
ChangeSet 1.1643.36.12, 2004/04/08 14:45:41-07:00, hannal@us.ibm.com

[PATCH] add class support to dsp56k.c

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


drivers/char/dsp56k.c | 27 +++++++++++++++++++++++++--
1 files changed, 25 insertions(+), 2 deletions(-)


diff -Nru a/drivers/char/dsp56k.c b/drivers/char/dsp56k.c
--- a/drivers/char/dsp56k.c Thu Apr 15 10:20:35 2004
+++ b/drivers/char/dsp56k.c Thu Apr 15 10:20:35 2004
@@ -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 @@
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 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;
@@ -511,17 +516,35 @@
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, "dsp56k");
+out:
+ return err;
}
module_init(dsp56k_init_driver);

static void __exit dsp56k_cleanup_driver(void)
{
+ class_simple_device_remove(MKDEV(DSP56K_MAJOR, 0));
+ class_simple_destroy(dsp56k_class);
unregister_chrdev(DSP56K_MAJOR, "dsp56k");
devfs_remove("dsp56k");
}
-
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