ALSA: hwdep - Fix coding style

Fix misc coding style issues in hwdep.h and add some comments.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/hwdep.h b/include/sound/hwdep.h
index d9eea013c753209a4dcb90f9bfc69eb95b697559..8c05e47a409053c69ddec36b60aee44b84907330 100644 (file)
--- a/include/sound/hwdep.h
+++ b/include/sound/hwdep.h
@@ -27,18 +27,28 @@
 
 struct snd_hwdep;
 
+/* hwdep file ops; all ops can be NULL */
 struct snd_hwdep_ops {
-       long long (*llseek) (struct snd_hwdep *hw, struct file * file, long long offset, int orig);
-       long (*read) (struct snd_hwdep *hw, char __user *buf, long count, loff_t *offset);
-       long (*write) (struct snd_hwdep *hw, const char __user *buf, long count, loff_t *offset);
-       int (*open) (struct snd_hwdep * hw, struct file * file);
-       int (*release) (struct snd_hwdep *hw, struct file * file);
-       unsigned int (*poll) (struct snd_hwdep *hw, struct file * file, poll_table * wait);
-       int (*ioctl) (struct snd_hwdep *hw, struct file * file, unsigned int cmd, unsigned long arg);
-       int (*ioctl_compat) (struct snd_hwdep *hw, struct file * file, unsigned int cmd, unsigned long arg);
-       int (*mmap) (struct snd_hwdep *hw, struct file * file, struct vm_area_struct * vma);
-       int (*dsp_status) (struct snd_hwdep *hw, struct snd_hwdep_dsp_status *status);
-       int (*dsp_load) (struct snd_hwdep *hw, struct snd_hwdep_dsp_image *image);
+       long long (*llseek)(struct snd_hwdep *hw, struct file *file,
+                           long long offset, int orig);
+       long (*read)(struct snd_hwdep *hw, char __user *buf,
+                    long count, loff_t *offset);
+       long (*write)(struct snd_hwdep *hw, const char __user *buf,
+                     long count, loff_t *offset);
+       int (*open)(struct snd_hwdep *hw, struct file * file);
+       int (*release)(struct snd_hwdep *hw, struct file * file);
+       unsigned int (*poll)(struct snd_hwdep *hw, struct file *file,
+                            poll_table *wait);
+       int (*ioctl)(struct snd_hwdep *hw, struct file *file,
+                    unsigned int cmd, unsigned long arg);
+       int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file,
+                           unsigned int cmd, unsigned long arg);
+       int (*mmap)(struct snd_hwdep *hw, struct file *file,
+                   struct vm_area_struct *vma);
+       int (*dsp_status)(struct snd_hwdep *hw,
+                         struct snd_hwdep_dsp_status *status);
+       int (*dsp_load)(struct snd_hwdep *hw,
+                       struct snd_hwdep_dsp_image *image);
 };
 
 struct snd_hwdep {
@@ -61,9 +71,9 @@ struct snd_hwdep {
        void (*private_free) (struct snd_hwdep *hwdep);
 
        struct mutex open_mutex;
-       int used;
-       unsigned int dsp_loaded;
-       unsigned int exclusive: 1;
+       int used;                       /* reference counter */
+       unsigned int dsp_loaded;        /* bit fields of loaded dsp indices */
+       unsigned int exclusive:1;       /* exclusive access mode */
 };
 
 extern int snd_hwdep_new(struct snd_card *card, char *id, int device,