ASoC: SOF: add Kconfig option for strict ABI checks

When the kernel is more recent than firmware files, it will always
behave in backwards-compatible ways.

Add optional behavior to check if the kernel is older than the
firmware files, so that the kernel fails early instead of attempting
to use new functionality it does not support.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/sof/Kconfig b/sound/soc/sof/Kconfig
index eaa3800..a1a9ffe 100644 (file)
--- a/sound/soc/sof/Kconfig
+++ b/sound/soc/sof/Kconfig
@@ -53,6 +53,21 @@ config SND_SOC_SOF_NOCODEC
          Say Y if you need this nocodec fallback option
          If unsure select "N".
 
+config SND_SOC_SOF_STRICT_ABI_CHECKS
+       bool "SOF strict ABI checks"
+       help
+         This option enables strict ABI checks for firmware and topology
+         files.
+         When these files are more recent than the kernel, the kernel
+         will handle the functionality it supports and may report errors
+         during topology creation or run-time usage if new functionality
+         is invoked.
+         This option will stop topology creation and firmware load upfront.
+         It is intended for SOF CI/releases and not for users or distros.
+         Say Y if you want strict ABI checks for an SOF release
+         If you are not involved in SOF releases and CI development
+         select "N".
+
 config SND_SOC_SOF_DEBUG
        bool "SOF debugging features"
        help