char *nbuf;
nsize = PAGE_ALIGN(nsize);
- nbuf = krealloc(buffer->buffer, nsize, GFP_KERNEL);
+ nbuf = krealloc(buffer->buffer, nsize, GFP_KERNEL | __GFP_ZERO);
if (! nbuf)
return -ENOMEM;
*
* Outputs the string on the procfs buffer just like printf().
*
- * Returns the size of output string.
+ * Return: The size of output string, or a negative error code.
*/
int snd_iprintf(struct snd_info_buffer *buffer, const char *fmt, ...)
{
struct snd_info_entry *snd_oss_root;
#endif
-static void snd_remove_proc_entry(struct proc_dir_entry *parent,
- struct proc_dir_entry *de)
-{
- if (de)
- remove_proc_entry(de->name, parent);
-}
-
static loff_t snd_info_entry_llseek(struct file *file, loff_t offset, int orig)
{
struct snd_info_private_data *data;
struct snd_info_buffer *buf;
ssize_t size = 0;
loff_t pos;
+ unsigned long realloc_size;
data = file->private_data;
if (snd_BUG_ON(!data))
pos = *offset;
if (pos < 0 || (long) pos != pos || (ssize_t) count < 0)
return -EIO;
- if ((unsigned long) pos + (unsigned long) count < (unsigned long) pos)
+ realloc_size = (unsigned long) pos + (unsigned long) count;
+ if (realloc_size < (unsigned long) pos || realloc_size > UINT_MAX)
return -EIO;
switch (entry->content) {
case SNDRV_INFO_CONTENT_TEXT:
struct snd_info_entry *entry;
struct snd_info_private_data *data;
struct snd_info_buffer *buffer;
- struct proc_dir_entry *p;
int mode, err;
mutex_lock(&info_mutex);
- p = PDE(inode);
- entry = p == NULL ? NULL : (struct snd_info_entry *)p->data;
+ entry = PDE_DATA(inode);
if (entry == NULL || ! entry->p) {
mutex_unlock(&info_mutex);
return -ENODEV;
goto __nomem;
data->rbuffer = buffer;
buffer->len = PAGE_SIZE;
- buffer->buffer = kmalloc(buffer->len, GFP_KERNEL);
+ buffer->buffer = kzalloc(buffer->len, GFP_KERNEL);
if (buffer->buffer == NULL)
goto __nomem;
}
#ifdef CONFIG_SND_OSSEMUL
snd_info_free_entry(snd_oss_root);
#endif
- snd_remove_proc_entry(NULL, snd_proc_root);
+ proc_remove(snd_proc_root);
}
return 0;
}
{
mutex_lock(&info_mutex);
if (card->proc_root_link) {
- snd_remove_proc_entry(snd_proc_root, card->proc_root_link);
+ proc_remove(card->proc_root_link);
card->proc_root_link = NULL;
}
if (strcmp(card->id, card->proc_root->name))
if (!card)
return;
mutex_lock(&info_mutex);
- if (card->proc_root_link) {
- snd_remove_proc_entry(snd_proc_root, card->proc_root_link);
- card->proc_root_link = NULL;
- }
+ proc_remove(card->proc_root_link);
+ card->proc_root_link = NULL;
if (card->proc_root)
snd_info_disconnect(card->proc_root);
mutex_unlock(&info_mutex);
* snd_info_get_line - read one line from the procfs buffer
* @buffer: the procfs buffer
* @line: the buffer to store
- * @len: the max. buffer size - 1
+ * @len: the max. buffer size
*
* Reads one line from the buffer and stores the string.
*
- * Returns zero if successful, or 1 if error or EOF.
+ * Return: Zero if successful, or 1 if error or EOF.
*/
int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len)
{
int c = -1;
+ if (snd_BUG_ON(!buffer || !buffer->buffer))
+ return 1;
if (len <= 0 || buffer->stop || buffer->error)
return 1;
- while (--len > 0) {
+ while (!buffer->stop) {
c = buffer->buffer[buffer->curr++];
- if (c == '\n') {
- if (buffer->curr >= buffer->size)
- buffer->stop = 1;
- break;
- }
- *line++ = c;
- if (buffer->curr >= buffer->size) {
+ if (buffer->curr >= buffer->size)
buffer->stop = 1;
+ if (c == '\n')
break;
+ if (len > 1) {
+ len--;
+ *line++ = c;
}
}
- while (c != '\n' && !buffer->stop) {
- c = buffer->buffer[buffer->curr++];
- if (buffer->curr >= buffer->size)
- buffer->stop = 1;
- }
*line = '\0';
return 0;
}
* Parses the original string and copy a token to the given
* string buffer.
*
- * Returns the updated pointer of the original string so that
+ * Return: The updated pointer of the original string so that
* it can be used for the next call.
*/
const char *snd_info_get_str(char *dest, const char *src, int len)
* Usually called from other functions such as
* snd_info_create_card_entry().
*
- * Returns the pointer of the new instance, or NULL on failure.
+ * Return: The pointer of the new instance, or %NULL on failure.
*/
static struct snd_info_entry *snd_info_create_entry(const char *name)
{
*
* Creates a new info entry and assigns it to the given module.
*
- * Returns the pointer of the new instance, or NULL on failure.
+ * Return: The pointer of the new instance, or %NULL on failure.
*/
struct snd_info_entry *snd_info_create_module_entry(struct module * module,
const char *name,
*
* Creates a new info entry and assigns it to the given card.
*
- * Returns the pointer of the new instance, or NULL on failure.
+ * Return: The pointer of the new instance, or %NULL on failure.
*/
struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card,
const char *name,
list_del_init(&entry->list);
root = entry->parent == NULL ? snd_proc_root : entry->parent->p;
snd_BUG_ON(!root);
- snd_remove_proc_entry(root, entry->p);
+ proc_remove(entry->p);
entry->p = NULL;
}
* For releasing this entry, use snd_device_free() instead of
* snd_info_free_entry().
*
- * Returns zero if successful, or a negative error code on failure.
+ * Return: Zero if successful, or a negative error code on failure.
*/
int snd_card_proc_new(struct snd_card *card, const char *name,
struct snd_info_entry **entryp)
*
* Registers the proc info entry.
*
- * Returns zero if successful, or a negative error code on failure.
+ * Return: Zero if successful, or a negative error code on failure.
*/
int snd_info_register(struct snd_info_entry * entry)
{
return -ENXIO;
root = entry->parent == NULL ? snd_proc_root : entry->parent->p;
mutex_lock(&info_mutex);
- p = create_proc_entry(entry->name, entry->mode, root);
- if (!p) {
- mutex_unlock(&info_mutex);
- return -ENOMEM;
+ if (S_ISDIR(entry->mode)) {
+ p = proc_mkdir_mode(entry->name, entry->mode, root);
+ if (!p) {
+ mutex_unlock(&info_mutex);
+ return -ENOMEM;
+ }
+ } else {
+ p = proc_create_data(entry->name, entry->mode, root,
+ &snd_info_entry_operations, entry);
+ if (!p) {
+ mutex_unlock(&info_mutex);
+ return -ENOMEM;
+ }
+ proc_set_size(p, entry->size);
}
- if (!S_ISDIR(entry->mode))
- p->proc_fops = &snd_info_entry_operations;
- p->size = entry->size;
- p->data = entry;
entry->p = p;
if (entry->parent)
list_add_tail(&entry->list, &entry->parent->children);
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff