ad5042ecbe
To simplify the code, Remove the power status checking in the tlb_flush_all, remove this: if (pm_runtime_get_if_in_use(data->dev) <= 0) continue; The mtk_iommu_tlb_flush_all is called from a) isr b) tlb flush range fail case c) iommu_create_device_direct_mappings In first two cases, the power and clock are always enabled. In the third case tlb flush is unnecessary because in a later patch in the series a full flush from the pm_runtime_resume callback is added. In addition, writing the tlb control register when the iommu is not resumed is ok and the write is ignored. Signed-off-by: Yong Wu <yong.wu@mediatek.com> [refactor commit log] Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20211208120744.2415-4-dafna.hirschfeld@collabora.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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.