On Tue, May 10, 2016 at 11:30:01PM +0200, Arnd Bergmann wrote: > gcc-6 started warning by default about variables that are not > used anywhere and that are marked 'const', generating many > false positives in an allmodconfig build, e.g.: > > arch/arm/mach-davinci/board-da830-evm.c:282:20: warning: > 'da830_evm_emif25_pins' defined but not used [-Wunused-const-variable=] > arch/arm/plat-omap/dmtimer.c:958:34: warning: 'omap_timer_match' defined but > not used [-Wunused-const-variable=] > drivers/bluetooth/hci_bcm.c:625:39: warning: 'acpi_bcm_default_gpios' defined > but not used [-Wunused-const-variable=] > drivers/char/hw_random/omap-rng.c:92:18: warning: 'reg_map_omap4' defined but > not used [-Wunused-const-variable=] > drivers/devfreq/exynos/exynos5_bus.c:381:32: warning: > 'exynos5_busfreq_int_pm' defined but not used [-Wunused-const-variable=] > drivers/dma/mv_xor.c:1139:34: warning: 'mv_xor_dt_ids' defined but not used > [-Wunused-const-variable=] > > This is similar to the existing -Wunused-but-set-variable warning > that was added in an earlier release and that we disable by default > now and only enable when W=1 is set, so it makes sense to do > the same here. Once we have eliminated the majority of the > warnings for both, we can put them back into the default list. > > We probably want this in backport kernels as well, to allow building > them with gcc-6 without introducing extra warnings. > > Signed-off-by: Arnd Bergmann <[email protected]> > Cc: [email protected]
Applied to kbuild.git#kbuild. Michal
