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6827ca573c
In order to let host's parent device, rtsx_usb, to use USB remote wake up signaling to do card detection, it needs to be suspended. Hence it's necessary to add runtime PM support for the memstick host. To keep memstick host stays suspended when it's not in use, convert the card detection function from kthread to delayed_work, which can be scheduled when the host is resumed and can be canceled when the host is suspended. Put the device to suspend when there's no card and the power mode is MEMSTICK_POWER_OFF. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> 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.