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02d4e62ae2
With clang-16, building without COMMON_CLK triggers a range check on
udelay() because of a constant division-by-zero calculation:
ld.lld: error: undefined symbol: __bad_udelay
>>> referenced by mt9m114.c
>>> drivers/media/i2c/mt9m114.o:(mt9m114_power_on) in archive vmlinux.a
In this configuration, the driver already fails to probe, before
this function gets called, so it's enough to suppress the assertion.
Do this by using fsleep(), which turns long delays into sleep() calls
in place of the link failure.
This is probably a good idea regardless to avoid overly long dynamic
udelay() calls on a slow clock.
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Fixes:
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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.