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5520c24000
clang emits a warning about a negative shift count for an
unused part of a conditional constant expression:
drivers/soc/rockchip/pm_domains.c:795:21: error: shift count is negative [-Werror,-Wshift-count-negative]
[RK3328_PD_VIO] = DOMAIN_RK3328(-1, 8, 8, false),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/soc/rockchip/pm_domains.c:129:2: note: expanded from macro 'DOMAIN_RK3328'
DOMAIN_M(pwr, pwr, req, (req) + 10, req, wakeup)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/soc/rockchip/pm_domains.c:105:33: note: expanded from macro 'DOMAIN_M'
.status_mask = (status >= 0) ? BIT(status) : 0, \
^~~~~~~~~~~
include/linux/bits.h:6:24: note: expanded from macro 'BIT'
This is a bug in clang that will be fixed in the future, but in order
to build cleanly with clang-8, it would be helpful to shut up this
warning. This file is the only instance reported by kernelci at the
moment.
The best solution I could come up with is to move the BIT() usage
out of the macro into the instantiation, so we can avoid using
BIT(-1).
Link: https://lore.kernel.org/r/20190703153112.2767411-1-arnd@arndb.de
Link: https://bugs.llvm.org/show_bug.cgi?id=38789
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
(cherry picked from commit b27aca2e55)
Change-Id: Iaab1301533c185524d17fa95182e87ab9dd2d428
Signed-off-by: Tao Huang <huangtao@rock-chips.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.