diff options
| -rw-r--r-- | include/sound/control.h | 2 | ||||
| -rw-r--r-- | sound/core/Kconfig | 17 | ||||
| -rw-r--r-- | sound/core/control.c | 4 |
3 files changed, 14 insertions, 9 deletions
diff --git a/include/sound/control.h b/include/sound/control.h index 985c51a8fb74..fcd3cce673ec 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -23,7 +23,7 @@ typedef int (snd_kcontrol_tlv_rw_t)(struct snd_kcontrol *kcontrol, unsigned int __user *tlv); /* internal flag for skipping validations */ -#ifdef CONFIG_SND_CTL_VALIDATION +#ifdef CONFIG_SND_CTL_DEBUG #define SNDRV_CTL_ELEM_ACCESS_SKIP_CHECK (1 << 24) #define snd_ctl_skip_validation(info) \ ((info)->access & SNDRV_CTL_ELEM_ACCESS_SKIP_CHECK) diff --git a/sound/core/Kconfig b/sound/core/Kconfig index 25b2434e4556..5289bb29131b 100644 --- a/sound/core/Kconfig +++ b/sound/core/Kconfig @@ -188,14 +188,19 @@ config SND_PCM_XRUN_DEBUG sound clicking when system is loaded, it may help to determine the process or driver which causes the scheduling gaps. -config SND_CTL_VALIDATION - bool "Perform sanity-checks for each control element access" +config SND_CTL_DEBUG + bool "Enable debugging feature for control API" depends on SND_DEBUG help - Say Y to enable the additional validation of each control element - access, including sanity-checks like whether the values returned - from the driver are in the proper ranges or the check of the invalid - access at out-of-array areas. + Say Y to enable the debugging feature for ALSA control API. + It performs the additional sanity-checks for each control element + read access, such as whether the values returned from the driver + are in the proper ranges or the check of the invalid access at + out-of-array areas. The error is printed when the driver gives + such unexpected values. + When you develop a driver that deals with control elements, it's + strongly recommended to try this one once and verify whether you see + any relevant errors or not. config SND_JACK_INJECTION_DEBUG bool "Sound jack injection interface via debugfs" diff --git a/sound/core/control.c b/sound/core/control.c index 6a8fd9933f06..1401522ce552 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -966,7 +966,7 @@ static const unsigned int value_sizes[] = { [SNDRV_CTL_ELEM_TYPE_INTEGER64] = sizeof(long long), }; -#ifdef CONFIG_SND_CTL_VALIDATION +#ifdef CONFIG_SND_CTL_DEBUG /* fill the remaining snd_ctl_elem_value data with the given pattern */ static void fill_remaining_elem_value(struct snd_ctl_elem_value *control, struct snd_ctl_elem_info *info, @@ -1188,7 +1188,7 @@ static int snd_ctl_elem_read(struct snd_card *card, snd_ctl_build_ioff(&control->id, kctl, index_offset); -#ifdef CONFIG_SND_CTL_VALIDATION +#ifdef CONFIG_SND_CTL_DEBUG /* info is needed only for validation */ memset(&info, 0, sizeof(info)); info.id = control->id; |