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Vladimir Lypak 268dd4edb7 iommu/qcom: restore IOMMU state if needed
If the IOMMU has a power domain then some state will be lost in
qcom_iommu_suspend and TZ will reset device if we don't call
qcom_scm_restore_sec_cfg before accessing it again.

Signed-off-by: Vladimir Lypak <vladimir.lypak@gmail.com>
[luca@z3ntu.xyz: reword commit message a bit]
Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Link: https://lore.kernel.org/r/20231011-msm8953-iommu-restore-v1-1-48a0c93809a2@z3ntu.xyz
Signed-off-by: Will Deacon <will@kernel.org>
History 2023-12-12 12:33:50 +00:00
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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.