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-rw-r--r--sound/core/Kconfig17
-rw-r--r--sound/core/control.c4
2 files changed, 13 insertions, 8 deletions
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;