Geert Uytterhoeven
998ea24f19
[ Upstream commit4760be481d] With gcc-5 and CONFIG_UBSAN_SHIFT=y: drivers/gpu/drm/msm/msm_mdss.c: In function 'msm_mdss_enable': drivers/gpu/drm/msm/msm_mdss.c:296:2: error: case label does not reduce to an integer constant case DPU_HW_VER_800: ^ drivers/gpu/drm/msm/msm_mdss.c:299:2: error: case label does not reduce to an integer constant case DPU_HW_VER_810: ^ drivers/gpu/drm/msm/msm_mdss.c:300:2: error: case label does not reduce to an integer constant case DPU_HW_VER_900: ^ This happens because for major revisions 8 or greather, the non-sign bit of the major revision number is shifted into bit 31 of a signed integer, which is undefined behavior. Fix this by casting the major revision number to unsigned int. Fixes:efcd010772("drm/msm/dpu: add support for SM8550") Fixes:4a352c2fc1("drm/msm/dpu: Introduce SC8280XP") Fixes:100d7ef699("drm/msm/dpu: add support for SM8450") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Rob Clark <robdclark@gmail.com> Patchwork: https://patchwork.freedesktop.org/patch/525152/ Link: https://lore.kernel.org/r/20230306090633.65918-1-geert+renesas@glider.be Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Sasha Levin <sashal@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.