Staging: easycap: fix sparse warnings for module parameters

easycap_main.c:34:5: warning: symbol 'easycap_debug' was not declared. Should it be static?
easycap_main.c:36:5: warning: symbol 'easycap_gain' was not declared. Should it be static?

These two variables actually were declared in several places.
The variables are used in several files.
I've fixed "easycap_debug" so it gets declared in one place only and included properly.
For "easycap_gain" made it static and I created added a
->gain member to the easycap struct.  This seems cleaner than using a
global variable and later on we may make this controlable via sysfs.

Cc:Mike Thomas <rmthomas@sciolus.org>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Acked-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/staging/easycap/easycap.h b/drivers/staging/easycap/easycap.h
index 111f53c33229..1205f5f9f9e8 100644
--- a/drivers/staging/easycap/easycap.h
+++ b/drivers/staging/easycap/easycap.h
@@ -475,6 +475,7 @@ int audio_idle;
 int audio_eof;
 int volume;
 int mute;
+s8 gain;
 
 struct data_buffer audio_isoc_buffer[AUDIO_ISOC_BUFFER_MANY];
 
@@ -639,6 +640,8 @@ struct signed_div_result {
 long long int quotient;
 unsigned long long int remainder;
 } signed_div(long long int, long long int);
+
+
 /*---------------------------------------------------------------------------*/
 /*
  *  MACROS
@@ -668,6 +671,7 @@ unsigned long long int remainder;
  *  IMMEDIATELY OBVIOUS FROM A CASUAL READING OF THE SOURCE CODE.  BEWARE.
 */
 /*---------------------------------------------------------------------------*/
+extern int easycap_debug;
 #define SAY(format, args...) do { \
 	printk(KERN_DEBUG "easycap:: %s: " \
 			format, __func__, ##args); \