On Tue, Mar 08, 2022 at 10:56:12PM +0100, Arnd Bergmann wrote: > From: Arnd Bergmann <arnd@xxxxxxxx> > > As a preparation for moving to -std=gnu11, turn off the > -Wshift-negative-value option. This warning is enabled by gcc when > building with -Wextra for c99 or higher, but not for c89. Since > the kernel already relies on well-defined overflow behavior, > the warning is not helpful and can simply be disabled in > all locations that use -Wextra. > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> > --- > [v4] > split into a separate patch > --- > drivers/gpu/drm/i915/Makefile | 1 + > drivers/staging/greybus/tools/Makefile | 3 ++- For > fs/btrfs/Makefile | 1 + Acked-by: David Sterba <dsterba@xxxxxxxx>