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commitf04086c225upstream. During some scenarios mmc_sdio_init_card() runs a retry path for the UHS-I specific initialization, which leads to removal of the previously allocated card. A new card is then re-allocated while retrying. However, in one of the corresponding error paths we may end up to remove an already removed card, which likely leads to a NULL pointer exception. So, let's fix this. Fixes:5fc3d80ef4("mmc: sdio: don't use rocr to check if the card could support UHS mode") Cc: <stable@vger.kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20200430091640.455-2-ulf.hansson@linaro.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
``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.