phonedev.diff is against 2.4.4 and brings the file phonedev.c up to date
with respect to the Quicknet CVS. Changes are very minor, mostly #if
LINUX_VERSION_CODE matching and structure updates. Small off by one
fixes and file operation semantics updates.
There is no impact to other files or functions functions.
David
--- drivers/telephony/phonedev.c Tue Sep 19 08:31:53 2000
+++ /zip/code/VoIP/ixj/phonedev.c Sat May 12 17:32:05 2001
@@ -12,8 +12,14 @@
*
* Fixes: Mar 01 2000 Thomas Sparr, <[EMAIL PROTECTED]>
* phone_register_device now works with unit!=PHONE_UNIT_ANY
+ *
+ * May 12 2001 David Ford, <[EMAIL PROTECTED]>
+ * brought kernel version up to date with CVS, minor changes
*/
+#if LINUX_VERSION_CODE < 0x020400
+#include <linux/config.h>
+#endif
#include <linux/version.h>
#include <linux/module.h>
#include <linux/types.h>
@@ -23,13 +29,16 @@
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/phonedev.h>
+#if LINUX_VERSION_CODE >= 0x020400
#include <linux/init.h>
+#endif
#include <asm/uaccess.h>
#include <asm/system.h>
#include <linux/kmod.h>
+#if LINUX_VERSION_CODE >= 0x020400
#include <linux/sem.h>
-
+#endif
#define PHONE_NUM_DEVICES 256
@@ -38,8 +47,9 @@
*/
static struct phone_device *phone_device[PHONE_NUM_DEVICES];
+#if LINUX_VERSION_CODE >= 0x020400
static DECLARE_MUTEX(phone_lock);
-
+#endif
/*
* Open a phone device.
*/
@@ -49,26 +59,48 @@
unsigned int minor = MINOR(inode->i_rdev);
int err = 0;
struct phone_device *p;
+#if LINUX_VERSION_CODE >= 0x020400
struct file_operations *old_fops, *new_fops = NULL;
-
+#endif
if (minor >= PHONE_NUM_DEVICES)
return -ENODEV;
+#if LINUX_VERSION_CODE >= 0x020400
down(&phone_lock);
+#endif
p = phone_device[minor];
+#if LINUX_VERSION_CODE < 0x020400
+ if (p == NULL) {
+#else
if (p)
new_fops = fops_get(p->f_op);
if (!new_fops) {
+#endif
char modname[32];
+#if LINUX_VERSION_CODE >= 0x020400
up(&phone_lock);
+#endif
sprintf(modname, "char-major-%d-%d", PHONE_MAJOR, minor);
request_module(modname);
+#if LINUX_VERSION_CODE >= 0x020400
down(&phone_lock);
+#endif
p = phone_device[minor];
- if (p == NULL || (new_fops = fops_get(p->f_op)) == NULL)
- {
- err=-ENODEV;
+#if LINUX_VERSION_CODE < 0x020400
+ if (p == NULL)
+ return -ENODEV;
+ }
+ if (p->open) {
+ err = p->open(p, file); /* Tell the device it is open */
+ if (err)
+ return err;
+ }
+ file->f_op = p->f_op;
+ return 0;
+#else
+ if (p == NULL || (new_fops = fops_get(p->f_op)) == NULL) {
+ err = -ENODEV;
goto end;
}
}
@@ -81,9 +113,10 @@
file->f_op = fops_get(old_fops);
}
fops_put(old_fops);
-end:
+ end:
up(&phone_lock);
return err;
+#endif
}
/*
@@ -101,20 +134,25 @@
if (unit != PHONE_UNIT_ANY) {
base = unit;
- end = unit + 1; /* enter the loop at least one time */
+ end = unit;
}
-
+#if LINUX_VERSION_CODE >= 0x020400
down(&phone_lock);
+#endif
for (i = base; i < end; i++) {
if (phone_device[i] == NULL) {
phone_device[i] = p;
p->minor = i;
MOD_INC_USE_COUNT;
+#if LINUX_VERSION_CODE >= 0x020400
up(&phone_lock);
+#endif
return 0;
}
}
+#if LINUX_VERSION_CODE >= 0x020400
up(&phone_lock);
+#endif
return -ENFILE;
}
@@ -124,48 +162,90 @@
void phone_unregister_device(struct phone_device *pfd)
{
+#if LINUX_VERSION_CODE >= 0x020400
down(&phone_lock);
+#endif
if (phone_device[pfd->minor] != pfd)
panic("phone: bad unregister");
phone_device[pfd->minor] = NULL;
+#if LINUX_VERSION_CODE >= 0x020400
up(&phone_lock);
+#endif
MOD_DEC_USE_COUNT;
}
-static struct file_operations phone_fops =
-{
- owner: THIS_MODULE,
- open: phone_open,
+static struct file_operations phone_fops = {
+#if LINUX_VERSION_CODE >= 0x020400
+ owner:THIS_MODULE,
+ open:phone_open,
+#else
+ NULL,
+ NULL,
+ NULL,
+ NULL, /* readdir */
+ NULL,
+ NULL,
+ NULL,
+ phone_open,
+ NULL, /* flush */
+ NULL
+#endif
};
/*
- * Board init functions
+ * Board init functions
*/
-
+
+#if LINUX_VERSION_CODE < 0x020400
+extern int ixj_init(void);
/*
* Initialise Telephony for linux
*/
+int telephony_init(void)
+#else
static int __init telephony_init(void)
+#endif
{
printk(KERN_INFO "Linux telephony interface: v1.00\n");
if (register_chrdev(PHONE_MAJOR, "telephony", &phone_fops)) {
printk("phonedev: unable to get major %d\n", PHONE_MAJOR);
return -EIO;
}
-
+#if LINUX_VERSION_CODE < 0x020400
+ /*
+ * Init kernel installed drivers
+ */
+#ifdef CONFIG_PHONE_IXJ
+ ixj_init();
+#endif
+#endif
return 0;
}
+#ifdef MODULE
+#if LINUX_VERSION_CODE < 0x020400
+int init_module(void)
+{
+ return telephony_init();
+}
+
+void cleanup_module(void)
+#else
static void __exit telephony_exit(void)
+#endif
{
unregister_chrdev(PHONE_MAJOR, "telephony");
}
+#endif
+
+#if LINUX_VERSION_CODE >= 0x020400
module_init(telephony_init);
module_exit(telephony_exit);
+#endif
EXPORT_SYMBOL(phone_register_device);
EXPORT_SYMBOL(phone_unregister_device);
