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If driver interrupts are enabled, SMBHSTCNT_INTREN will be 1 after the first transaction, and will stay to that value forever. This means that interrupts will be generated for both host-initiated transactions and also SMBus Alert events even after the driver is unloaded. To be on the safe side, we should restore the initial state of this bit at suspend and reboot time, as we do for several other configuration bits already and for the same reason: the BIOS should be handed the device in the same configuration state in which we received it. Otherwise interrupts may be generated which nobody will process. Signed-off-by: Jean Delvare <jdelvare@suse.de> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.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.