Hi Greg, Toralf just pointed out in another thread that the commit message and the content of this patch don't match (https://lkml.org/lkml/2019/7/29/1475) I did some minor digging, the content of the queued patch is: commit 4df607cc6fe8e46b258ff2a53d0a60ca3008ffc7 Author: Nathan Huckleberry <nhuck@xxxxxxxxxx> Date: Mon Jun 17 10:28:29 2019 -0700 kbuild: Remove unnecessary -Wno-unused-value however the commit message is from: commit 25cec756891e8733433efea63b2254ddc93aa5cc Author: Matthias Kaehlcke <mka@xxxxxxxxxxxx> Date: Tue Jun 18 14:14:40 2019 -0700 net/ipv4: fib_trie: Avoid cryptic ternary expressions It seems this hasn't been commited to -stable yet, so we are probably in time to remove it from the queue before it becomes git history and have Nathan re-spin the patch(es). On Mon, Jul 29, 2019 at 09:21:19PM +0200, Greg Kroah-Hartman wrote: > [ Upstream commit 25cec756891e8733433efea63b2254ddc93aa5cc ] > > empty_child_inc/dec() use the ternary operator for conditional > operations. The conditions involve the post/pre in/decrement > operator and the operation is only performed when the condition > is *not* true. This is hard to parse for humans, use a regular > 'if' construct instead and perform the in/decrement separately. > > This also fixes two warnings that are emitted about the value > of the ternary expression being unused, when building the kernel > with clang + "kbuild: Remove unnecessary -Wno-unused-value" > (https://lore.kernel.org/patchwork/patch/1089869/): > > CC net/ipv4/fib_trie.o > net/ipv4/fib_trie.c:351:2: error: expression result unused [-Werror,-Wunused-value] > ++tn_info(n)->empty_children ? : ++tn_info(n)->full_children; > > Fixes: 95f60ea3e99a ("fib_trie: Add collapse() and should_collapse() to resize") > Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> > Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx> > Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> > Acked-by: Alexander Duyck <alexander.h.duyck@xxxxxxxxxxxxxxx> > Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> > Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> > --- > scripts/Makefile.extrawarn | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn > index 3ab8d1a303cd..b293246e48fe 100644 > --- a/scripts/Makefile.extrawarn > +++ b/scripts/Makefile.extrawarn > @@ -68,7 +68,6 @@ else > > ifdef CONFIG_CC_IS_CLANG > KBUILD_CFLAGS += -Wno-initializer-overrides > -KBUILD_CFLAGS += -Wno-unused-value > KBUILD_CFLAGS += -Wno-format > KBUILD_CFLAGS += -Wno-sign-compare > KBUILD_CFLAGS += -Wno-format-zero-length
