powerpc/boot: Fix build of dts/fsl

[ Upstream commit b36f835b636908e4122f2e17310b1dbc380a3b19 ]

The lkp robot reported that some configs fail to build, for example
mpc85xx_smp_defconfig, with:

  cc1: fatal error: opening output file arch/powerpc/boot/dts/fsl/.mpc8540ads.dtb.dts.tmp: No such file or directory

This bisects to:
  cc8a51ca6f05 ("kbuild: always create directories of targets")

Although that commit claims to be about in-tree builds, it somehow
breaks out-of-tree builds. But presumably it's just exposing a latent
bug in our Makefiles.

We can fix it by adding to targets for dts/fsl in the same way that we
do for dts.

Fixes: cc8a51ca6f05 ("kbuild: always create directories of targets")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201215032906.473460-1-mpe@ellerman.id.au
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index f8ce6d2dde7b1f72544374fb0ee01c67b7ed560a..e4b364b5da9e7a110400ac4d746c23108f2dfa26 100644 (file)
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -368,6 +368,8 @@ initrd-y := $(filter-out $(image-y), $(initrd-y))
 targets        += $(image-y) $(initrd-y)
 targets += $(foreach x, dtbImage uImage cuImage simpleImage treeImage, \
                $(patsubst $(x).%, dts/%.dtb, $(filter $(x).%, $(image-y))))
+targets += $(foreach x, dtbImage uImage cuImage simpleImage treeImage, \
+               $(patsubst $(x).%, dts/fsl/%.dtb, $(filter $(x).%, $(image-y))))
 
 $(addprefix $(obj)/, $(initrd-y)): $(obj)/ramdisk.image.gz