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-Wunintialized was disabled in commitc562746149("drm/i915: Disable -Wuninitialized") because there were two warnings that were false positives. The first was due to DECLARE_WAIT_QUEUE_HEAD_ONSTACK, which was fixed in LLVM 9.0.0. The second was in busywait_stop, which was fixed in LLVM 10.0.0 (issue 415). The kernel's minimum version for LLVM is 10.0.1 so this warning can be safely enabled, where it has already caught a couple bugs. Link: https://github.com/ClangBuiltLinux/linux/issues/220 Link: https://github.com/ClangBuiltLinux/linux/issues/415 Link: https://github.com/ClangBuiltLinux/linux/issues/499 Link:2e040398f8Link:c667cdc850Fixes:c562746149("drm/i915: Disable -Wuninitialized") References:2ea4a7ba9b("drm/i915/gt: Avoid uninitialized use of rpcurupei in frequency_show") References:2034c2129b("drm/i915/display: Ensure that ret is always initialized in icl_combo_phy_verify_state") Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20210216212953.24458-1-nathan@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.