mirror of
https://github.com/lm-sensors/lm-sensors.git
synced 2026-11-08 16:11:26 +00:00
Dynamic generation of /proc/bus/i2c-? files (no info yet)
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@17 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Frodo Looijaard committed
1 parent
85e409d322
commit
ad1f47a49a
2 files changed
+194
-36
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+97
-18
@@ -30,7 +30,7 @@
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#ifdef MODULE
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extern int init_module(void);
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extern int cleanup_module(void);
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#endif /* MODULE */
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#endif /* def MODULE */
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static int i2cproc_init(void);
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static int i2cproc_cleanup(void);
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@@ -41,14 +41,12 @@ static int i2cproc_command(struct i2c_client *client, unsigned int cmd,
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static void i2cproc_inc_use(struct i2c_client *client);
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static void i2cproc_dec_use(struct i2c_client *client);
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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static int read_bus_i2c(char *buf, char **start, off_t offset, int len,
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int *eof , void *private);
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static struct proc_dir_entry *proc_bus_i2c;
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#else /* (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0)) */
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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static int read_bus_i2c(char *buf, char **start, off_t offset, int len,
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int unused);
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@@ -80,7 +78,10 @@ static struct proc_dir_entry proc_bus_i2c_dir =
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/* get_info */ &read_bus_i2c
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};
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#endif /* (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0)) */
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/* List of registered entries in /proc/bus */
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static struct proc_dir_entry *i2cproc_proc_entries[I2C_ADAP_MAX];
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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/* Used by init/cleanup */
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static int i2cproc_initialized;
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@@ -113,14 +114,19 @@ static struct i2c_client i2cproc_client_template = {
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/* data */ NULL
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};
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int i2cproc_init(void)
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{
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int res;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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struct proc_dir_entry *proc_bus_i2c;
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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printk("i2c-proc.o version %s (%s)\n",LM_VERSION,LM_DATE);
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i2cproc_initialized = 0;
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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if (! proc_bus) {
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printk("i2c-proc.o: /proc/bus/ does not exist, module not inserted.\n");
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i2cproc_cleanup();
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@@ -136,7 +142,7 @@ int i2cproc_init(void)
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return -ENOENT;
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}
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i2cproc_initialized += 2;
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#else
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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/* In Linux 2.0.x, there is no /proc/bus! But I hope no other module
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introduced it, or we are fucked. */
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if ((res = proc_register_dynamic(&proc_root, &proc_bus_dir))) {
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@@ -152,7 +158,7 @@ int i2cproc_init(void)
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return res;
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}
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i2cproc_initialized ++;
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#endif
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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if ((res = i2c_add_driver(&i2cproc_driver))) {
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printk("i2c-proc.o: Driver registration failed, module not inserted.\n");
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i2cproc_cleanup();
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@@ -175,13 +181,13 @@ int i2cproc_cleanup(void)
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i2cproc_initialized--;
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}
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if (i2cproc_initialized >= 1) {
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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if ((res = remove_proc_entry("i2c",proc_bus))) {
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printk("i2c-proc.o: could not delete /proc/bus/i2c, module not removed.");
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return res;
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}
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i2cproc_initialized -= 2;
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#else
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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if (i2cproc_initialized >= 2) {
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if ((res = proc_unregister(&proc_bus_dir,proc_bus_i2c_dir.low_ino))) {
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printk("i2c-proc.o: could not delete /proc/bus/i2c, "
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@@ -196,17 +202,17 @@ int i2cproc_cleanup(void)
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return res;
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}
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i2cproc_initialized --;
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#endif
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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}
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return 0;
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}
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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int read_bus_i2c(char *buf, char **start, off_t offset, int len, int *eof,
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void *private)
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#else
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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int read_bus_i2c(char *buf, char **start, off_t offset, int len, int unused)
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#endif
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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{
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int i;
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len = 0;
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@@ -216,19 +222,35 @@ int read_bus_i2c(char *buf, char **start, off_t offset, int len, int unused)
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i2c_is_smbus_adapter(i2cproc_adapters[i])?"smbus":
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#ifdef DEBUG
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i2c_is_isa_adapter(i2cproc_adapters[i])?"isa":
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#endif
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#endif /* def DEBUG */
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"i2c",
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i2cproc_adapters[i]->name,
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i2cproc_adapters[i]->algo->name);
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return len;
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}
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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int read_bus_i2c_file(char *buf, char **start, off_t offset, int len,
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int *eof, void *private)
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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int read_bus_i2c_file(char *buf, char **start, off_t offset, int len,
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int unused)
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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{
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len = 0;
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return len;
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}
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/* We need to add the adapter to i2cproc_adapters, if it is interesting
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enough */
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int i2cproc_attach_adapter(struct i2c_adapter *adapter)
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{
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struct i2c_client *client;
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int i,res;
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char name[8];
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struct proc_dir_entry *proc_entry;
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#ifndef DEBUG
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if (i2c_is_isa_adapter(adapter))
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@@ -251,15 +273,55 @@ int i2cproc_attach_adapter(struct i2c_adapter *adapter)
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client->adapter = adapter;
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if ((res = i2c_attach_client(client))) {
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printk("i2c-proc.o: Attaching client failed.\n");
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kfree(client);
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return res;
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}
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i2cproc_adapters[i] = adapter;
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sprintf(name,"i2c-%d",i);
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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proc_entry = create_proc_entry(name,0,proc_bus);
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if (! proc_entry)
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else {
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printk("i2c-proc.o: Could not create /proc/bus/%s\n",name);
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kfree(client);
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return -ENOENT;
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}
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proc_entry->read_proc = &read_bus_i2c_file;
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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if (!(proc_entry = kmalloc(sizeof(struct proc_dir_entry)+strlen(name)+1,
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GFP_KERNEL))) {
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printk("i2c-proc.o: Out of memory!\n");
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return -ENOMEM;
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}
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memset(proc_entry,0,sizeof(struct proc_dir_entry));
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proc_entry->namelen = strlen(name);
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proc_entry->name = (char *) (proc_entry + 1);
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proc_entry->mode = S_IRUGO | S_IFREG;
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proc_entry->nlink = 1;
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proc_entry->get_info = &read_bus_i2c_file;
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strcpy((char *) proc_entry->name,name);
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if ((res = proc_register_dynamic(&proc_bus_dir, proc_entry))) {
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printk("i2c-proc.o: Could not create %s.\n",name);
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kfree(proc_entry);
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kfree(client);
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return res;
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}
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i2cproc_proc_entries[i] = proc_entry;
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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return 0;
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}
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int i2cproc_detach_client(struct i2c_client *client)
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{
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int i,res;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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char name[8];
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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printk("OK!\n");
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#ifndef DEBUG
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@@ -269,8 +331,25 @@ int i2cproc_detach_client(struct i2c_client *client)
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for (i = 0; i < I2C_ADAP_MAX; i++)
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if (client->adapter == i2cproc_adapters[i]) {
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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sprintf(name,"i2c-%d",i);
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if ((res = remove_proc_entry(name,proc_bus))) {
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printk("i2c-proc.o: Deregistration of /proc entry failed, "
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"client not detached.\n");
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return res;
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}
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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if ((res = proc_unregister(&proc_bus_dir,
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i2cproc_proc_entries[i]->low_ino))) {
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printk("i2c-proc.o: Deregistration of /proc entry failed, "
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"client not detached.\n");
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return res;
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}
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kfree(i2cproc_proc_entries[i]);
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i2cproc_proc_entries[i] = NULL;
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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if ((res = i2c_detach_client(client))) {
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printk("i2c-bus.o: Client deregistration failed, "
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printk("i2c-proc.o: Client deregistration failed, "
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"client not detached.\n");
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return res;
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}
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@@ -314,5 +393,5 @@ int cleanup_module(void)
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return i2cproc_cleanup();
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}
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#endif /* MODULE */
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#endif /* def MODULE */
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+97
-18
@@ -30,7 +30,7 @@
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#ifdef MODULE
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extern int init_module(void);
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extern int cleanup_module(void);
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#endif /* MODULE */
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#endif /* def MODULE */
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static int i2cproc_init(void);
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static int i2cproc_cleanup(void);
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@@ -41,14 +41,12 @@ static int i2cproc_command(struct i2c_client *client, unsigned int cmd,
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static void i2cproc_inc_use(struct i2c_client *client);
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static void i2cproc_dec_use(struct i2c_client *client);
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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static int read_bus_i2c(char *buf, char **start, off_t offset, int len,
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int *eof , void *private);
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static struct proc_dir_entry *proc_bus_i2c;
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#else /* (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0)) */
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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static int read_bus_i2c(char *buf, char **start, off_t offset, int len,
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int unused);
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@@ -80,7 +78,10 @@ static struct proc_dir_entry proc_bus_i2c_dir =
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/* get_info */ &read_bus_i2c
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};
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#endif /* (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0)) */
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/* List of registered entries in /proc/bus */
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static struct proc_dir_entry *i2cproc_proc_entries[I2C_ADAP_MAX];
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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/* Used by init/cleanup */
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static int i2cproc_initialized;
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@@ -113,14 +114,19 @@ static struct i2c_client i2cproc_client_template = {
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/* data */ NULL
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};
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int i2cproc_init(void)
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{
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int res;
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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struct proc_dir_entry *proc_bus_i2c;
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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printk("i2c-proc.o version %s (%s)\n",LM_VERSION,LM_DATE);
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i2cproc_initialized = 0;
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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if (! proc_bus) {
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printk("i2c-proc.o: /proc/bus/ does not exist, module not inserted.\n");
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i2cproc_cleanup();
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@@ -136,7 +142,7 @@ int i2cproc_init(void)
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return -ENOENT;
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}
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i2cproc_initialized += 2;
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#else
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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/* In Linux 2.0.x, there is no /proc/bus! But I hope no other module
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introduced it, or we are fucked. */
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if ((res = proc_register_dynamic(&proc_root, &proc_bus_dir))) {
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@@ -152,7 +158,7 @@ int i2cproc_init(void)
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return res;
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}
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i2cproc_initialized ++;
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#endif
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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if ((res = i2c_add_driver(&i2cproc_driver))) {
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printk("i2c-proc.o: Driver registration failed, module not inserted.\n");
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i2cproc_cleanup();
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@@ -175,13 +181,13 @@ int i2cproc_cleanup(void)
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i2cproc_initialized--;
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}
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if (i2cproc_initialized >= 1) {
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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if ((res = remove_proc_entry("i2c",proc_bus))) {
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printk("i2c-proc.o: could not delete /proc/bus/i2c, module not removed.");
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return res;
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}
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i2cproc_initialized -= 2;
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#else
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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if (i2cproc_initialized >= 2) {
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if ((res = proc_unregister(&proc_bus_dir,proc_bus_i2c_dir.low_ino))) {
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printk("i2c-proc.o: could not delete /proc/bus/i2c, "
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@@ -196,17 +202,17 @@ int i2cproc_cleanup(void)
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return res;
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}
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i2cproc_initialized --;
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#endif
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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}
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return 0;
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}
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#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0))
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
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int read_bus_i2c(char *buf, char **start, off_t offset, int len, int *eof,
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void *private)
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#else
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
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int read_bus_i2c(char *buf, char **start, off_t offset, int len, int unused)
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#endif
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
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{
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int i;
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len = 0;
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@@ -216,19 +222,35 @@ int read_bus_i2c(char *buf, char **start, off_t offset, int len, int unused)
|
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i2c_is_smbus_adapter(i2cproc_adapters[i])?"smbus":
|
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#ifdef DEBUG
|
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i2c_is_isa_adapter(i2cproc_adapters[i])?"isa":
|
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#endif
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#endif /* def DEBUG */
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"i2c",
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i2cproc_adapters[i]->name,
|
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i2cproc_adapters[i]->algo->name);
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return len;
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}
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|
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
|
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int read_bus_i2c_file(char *buf, char **start, off_t offset, int len,
|
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int *eof, void *private)
|
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#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
|
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int read_bus_i2c_file(char *buf, char **start, off_t offset, int len,
|
||||
int unused)
|
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#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
|
||||
{
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||||
len = 0;
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return len;
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||||
}
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|
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|
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/* We need to add the adapter to i2cproc_adapters, if it is interesting
|
||||
enough */
|
||||
int i2cproc_attach_adapter(struct i2c_adapter *adapter)
|
||||
{
|
||||
struct i2c_client *client;
|
||||
int i,res;
|
||||
char name[8];
|
||||
|
||||
struct proc_dir_entry *proc_entry;
|
||||
|
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#ifndef DEBUG
|
||||
if (i2c_is_isa_adapter(adapter))
|
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@@ -251,15 +273,55 @@ int i2cproc_attach_adapter(struct i2c_adapter *adapter)
|
||||
client->adapter = adapter;
|
||||
if ((res = i2c_attach_client(client))) {
|
||||
printk("i2c-proc.o: Attaching client failed.\n");
|
||||
kfree(client);
|
||||
return res;
|
||||
}
|
||||
i2cproc_adapters[i] = adapter;
|
||||
|
||||
sprintf(name,"i2c-%d",i);
|
||||
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
|
||||
proc_entry = create_proc_entry(name,0,proc_bus);
|
||||
if (! proc_entry)
|
||||
else {
|
||||
printk("i2c-proc.o: Could not create /proc/bus/%s\n",name);
|
||||
kfree(client);
|
||||
return -ENOENT;
|
||||
}
|
||||
proc_entry->read_proc = &read_bus_i2c_file;
|
||||
#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
|
||||
if (!(proc_entry = kmalloc(sizeof(struct proc_dir_entry)+strlen(name)+1,
|
||||
GFP_KERNEL))) {
|
||||
printk("i2c-proc.o: Out of memory!\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
memset(proc_entry,0,sizeof(struct proc_dir_entry));
|
||||
proc_entry->namelen = strlen(name);
|
||||
proc_entry->name = (char *) (proc_entry + 1);
|
||||
proc_entry->mode = S_IRUGO | S_IFREG;
|
||||
proc_entry->nlink = 1;
|
||||
proc_entry->get_info = &read_bus_i2c_file;
|
||||
strcpy((char *) proc_entry->name,name);
|
||||
|
||||
if ((res = proc_register_dynamic(&proc_bus_dir, proc_entry))) {
|
||||
printk("i2c-proc.o: Could not create %s.\n",name);
|
||||
kfree(proc_entry);
|
||||
kfree(client);
|
||||
return res;
|
||||
}
|
||||
|
||||
i2cproc_proc_entries[i] = proc_entry;
|
||||
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
|
||||
return 0;
|
||||
}
|
||||
|
||||
int i2cproc_detach_client(struct i2c_client *client)
|
||||
{
|
||||
int i,res;
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
|
||||
char name[8];
|
||||
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
|
||||
|
||||
printk("OK!\n");
|
||||
#ifndef DEBUG
|
||||
@@ -269,8 +331,25 @@ int i2cproc_detach_client(struct i2c_client *client)
|
||||
|
||||
for (i = 0; i < I2C_ADAP_MAX; i++)
|
||||
if (client->adapter == i2cproc_adapters[i]) {
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29))
|
||||
sprintf(name,"i2c-%d",i);
|
||||
if ((res = remove_proc_entry(name,proc_bus))) {
|
||||
printk("i2c-proc.o: Deregistration of /proc entry failed, "
|
||||
"client not detached.\n");
|
||||
return res;
|
||||
}
|
||||
#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,1,29)) */
|
||||
if ((res = proc_unregister(&proc_bus_dir,
|
||||
i2cproc_proc_entries[i]->low_ino))) {
|
||||
printk("i2c-proc.o: Deregistration of /proc entry failed, "
|
||||
"client not detached.\n");
|
||||
return res;
|
||||
}
|
||||
kfree(i2cproc_proc_entries[i]);
|
||||
i2cproc_proc_entries[i] = NULL;
|
||||
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,29)) */
|
||||
if ((res = i2c_detach_client(client))) {
|
||||
printk("i2c-bus.o: Client deregistration failed, "
|
||||
printk("i2c-proc.o: Client deregistration failed, "
|
||||
"client not detached.\n");
|
||||
return res;
|
||||
}
|
||||
@@ -314,5 +393,5 @@ int cleanup_module(void)
|
||||
return i2cproc_cleanup();
|
||||
}
|
||||
|
||||
#endif /* MODULE */
|
||||
#endif /* def MODULE */
|
||||
|
||||
Reference in new issue
Block a user