Merge tag 'iomap-6.0-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

[linux-2.6-microblaze.git] / sound / core / Kconfig

diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index dd7b407..12990d9 100644 (file)
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -154,6 +154,16 @@ config SND_VERBOSE_PRINTK
 
          You don't need this unless you're debugging ALSA.
 
+config SND_CTL_FAST_LOOKUP
+       bool "Fast lookup of control elements" if EXPERT
+       default y
+       select XARRAY_MULTI
+       help
+         This option enables the faster lookup of control elements.
+         It will consume more memory because of the additional Xarray.
+         If you want to choose the memory footprint over the performance
+         inevitably, turn this off.
+
 config SND_DEBUG
        bool "Debug"
        help
@@ -178,14 +188,29 @@ 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_INPUT_VALIDATION
+       bool "Validate input data to control API"
+       help
+         Say Y to enable the additional validation for the input data to
+         each control element, including the value range checks.
+         An error is returned from ALSA core for invalid inputs without
+         passing to the driver.  This is a kind of hardening for drivers
+         that have no proper error checks, at the cost of a slight
+         performance overhead.
+
+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"