87336783d0
commit 6f49256897083848ce9a59651f6b53fc80462397 upstream.
Make sure that the soundwire device used for register accesses has been
enumerated and initialised before trying to read the codec variant
during component probe.
This specifically avoids interpreting (a masked and shifted) -EBUSY
errno as the variant:
wcd938x_codec audio-codec: ASoC: error at soc_component_read_no_lock on audio-codec for register: [0x000034b0] -16
in case the soundwire device has not yet been initialised, which in turn
prevents some headphone controls from being registered.
Fixes: 8d78602aa87a ("ASoC: codecs: wcd938x: add basic driver")
Cc: stable@vger.kernel.org # 5.14
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reported-by: Steev Klimaszewski <steev@kali.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Link: https://lore.kernel.org/r/20230701094723.29379-1-johan+linaro@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
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https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.