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61840edc88
For dw_mmc, the ->init_card() callback is being used to turn on/off automatic internal clock gating for powersave, which is needed to properly support SDIO irqs on DAT1. However, using the ->init_card() comes with a drawback in this case, as it means that the powersave feature becomes disabled, no matter whether the SDIO irqs becomes turned on or not. To improve the behaviour, let's change into using the ->enable_sdio_irq() callback instead. This works fine, because dw_mmc uses sdio_signal_irq() to signal the irqs, thus the ->enable_sdio_irq() is never executed from within atomic context. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20211020102907.70195-1-ulf.hansson@linaro.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
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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.