From 2a9a05c43294d703e351753da49231c47e0aad0d Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Tue, 18 Jan 2011 14:03:23 +0200 Subject: [PATCH] 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 Signed-off-by: Tomas Winkler Acked-by: Dan Carpenter Signed-off-by: Greg Kroah-Hartman --- drivers/staging/easycap/easycap.h | 4 ++++ drivers/staging/easycap/easycap_ioctl.h | 2 -- drivers/staging/easycap/easycap_low.c | 6 +----- drivers/staging/easycap/easycap_low.h | 2 -- drivers/staging/easycap/easycap_main.c | 7 ++++++- drivers/staging/easycap/easycap_settings.h | 2 -- drivers/staging/easycap/easycap_sound.h | 2 -- drivers/staging/easycap/easycap_testcard.h | 2 -- 8 files changed, 11 insertions(+), 16 deletions(-) diff --git a/drivers/staging/easycap/easycap.h b/drivers/staging/easycap/easycap.h index 111f53c..1205f5f 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); \ diff --git a/drivers/staging/easycap/easycap_ioctl.h b/drivers/staging/easycap/easycap_ioctl.h index 938de37..245386f 100644 --- a/drivers/staging/easycap/easycap_ioctl.h +++ b/drivers/staging/easycap/easycap_ioctl.h @@ -27,8 +27,6 @@ #if !defined(EASYCAP_IOCTL_H) #define EASYCAP_IOCTL_H -extern int easycap_debug; -extern int easycap_gain; extern struct easycap_dongle easycapdc60_dongle[]; extern struct easycap_standard easycap_standard[]; extern struct easycap_format easycap_format[]; diff --git a/drivers/staging/easycap/easycap_low.c b/drivers/staging/easycap/easycap_low.c index b618d4b..e9f3a36 100644 --- a/drivers/staging/easycap/easycap_low.c +++ b/drivers/staging/easycap/easycap_low.c @@ -1091,11 +1091,7 @@ SAM("0x%04X:0x%04X is audio vendor id\n", id1, id2); * SELECT AUDIO SOURCE "LINE IN" AND SET THE AUDIO GAIN. */ /*---------------------------------------------------------------------------*/ -if (31 < easycap_gain) - easycap_gain = 31; -if (0 > easycap_gain) - easycap_gain = 0; -if (0 != audio_gainset(pusb_device, (__s8)easycap_gain)) +if (0 != audio_gainset(pusb_device, peasycap->gain)) SAY("ERROR: audio_gainset() failed\n"); check_vt(pusb_device); return 0; diff --git a/drivers/staging/easycap/easycap_low.h b/drivers/staging/easycap/easycap_low.h index d2b69e9..7f3b393 100644 --- a/drivers/staging/easycap/easycap_low.h +++ b/drivers/staging/easycap/easycap_low.h @@ -27,8 +27,6 @@ #if !defined(EASYCAP_LOW_H) #define EASYCAP_LOW_H -extern int easycap_debug; -extern int easycap_gain; extern struct easycap_dongle easycapdc60_dongle[]; #endif /*EASYCAP_LOW_H*/ diff --git a/drivers/staging/easycap/easycap_main.c b/drivers/staging/easycap/easycap_main.c index 84128cf..a0b954c 100644 --- a/drivers/staging/easycap/easycap_main.c +++ b/drivers/staging/easycap/easycap_main.c @@ -33,7 +33,7 @@ int easycap_debug; static int easycap_bars = 1; -int easycap_gain = 16; +static int easycap_gain = 16; module_param_named(debug, easycap_debug, int, S_IRUGO | S_IWUSR); module_param_named(bars, easycap_bars, int, S_IRUGO | S_IWUSR); module_param_named(gain, easycap_gain, int, S_IRUGO | S_IWUSR); @@ -3412,6 +3412,8 @@ struct v4l2_device *pv4l2_device; #endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ /*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ +/* setup modules params */ + if ((struct usb_interface *)NULL == pusb_interface) { SAY("ERROR: pusb_interface is NULL\n"); return -EFAULT; @@ -3547,6 +3549,9 @@ if (0 == bInterfaceNumber) { "%i=peasycap->kref.refcount.counter\n", \ bInterfaceNumber, peasycap->kref.refcount.counter); + /* module params */ + peasycap->gain = (s8)clamp(easycap_gain, 0, 31); + init_waitqueue_head(&peasycap->wq_video); init_waitqueue_head(&peasycap->wq_audio); init_waitqueue_head(&peasycap->wq_trigger); diff --git a/drivers/staging/easycap/easycap_settings.h b/drivers/staging/easycap/easycap_settings.h index 5fe6f07..09b11cb 100644 --- a/drivers/staging/easycap/easycap_settings.h +++ b/drivers/staging/easycap/easycap_settings.h @@ -27,8 +27,6 @@ #if !defined(EASYCAP_SETTINGS_H) #define EASYCAP_SETTINGS_H -extern int easycap_debug; -extern int easycap_gain; extern struct easycap_dongle easycapdc60_dongle[]; #endif /*EASYCAP_SETTINGS_H*/ diff --git a/drivers/staging/easycap/easycap_sound.h b/drivers/staging/easycap/easycap_sound.h index 82104c8..ffcd6f2 100644 --- a/drivers/staging/easycap/easycap_sound.h +++ b/drivers/staging/easycap/easycap_sound.h @@ -27,8 +27,6 @@ #if !defined(EASYCAP_SOUND_H) #define EASYCAP_SOUND_H -extern int easycap_debug; -extern int easycap_gain; extern struct easycap_dongle easycapdc60_dongle[]; extern struct easycap *peasycap; extern struct usb_driver easycap_usb_driver; diff --git a/drivers/staging/easycap/easycap_testcard.h b/drivers/staging/easycap/easycap_testcard.h index 5159127..2a21e7c 100644 --- a/drivers/staging/easycap/easycap_testcard.h +++ b/drivers/staging/easycap/easycap_testcard.h @@ -27,8 +27,6 @@ #if !defined(EASYCAP_TESTCARD_H) #define EASYCAP_TESTCARD_H -extern int easycap_debug; -extern int easycap_gain; extern struct easycap_dongle easycapdc60_dongle[]; #endif /*EASYCAP_TESTCARD_H*/ -- 2.7.4