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d4fa7d772a
This patch is used to free the old_dyn_addr when the caller want to reattach the device to the different dynamic address. If the old_dyn_addr is 0 the function will treat it as no old_dyn_addr is reserved on the bus. Without the patch, when the driver reattach the i3c device after setnewda the old_dyn_addr will be permanently occupied. Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com> Link: https://lore.kernel.org/r/20220926105145.8145-1-billy_tsai@aspeedtech.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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.