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1f1929f3f2
For some controllers, in Present State Register, Data Line Active bit is not reliable for commands (such as CMD6, CMD7, CMD12, CMD28, CMD29, or CMD38) with busy signal. DLA affects Command with Data Inhibit bit. Therefore, software driver may not know the busy status in DLA/CDIHB. Futunately MMC core driver has already polled card status with CMD13 after sending any command with busy signal. So we can just ignore CDIHB never released issue for such controllers. This patch is to add a quirk to handle this. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.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
``make pdfdocs``. The formatted documentation can also be read online at:
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.