[kvm-unit-tests PATCH v3 05/18] arm64: efi: Remove redundant dtb generation

[Andrew Jones <andrew.jones@linux.dev>]

When a line in bash is written as

 $(some-line)

Then 'some-line' will be evaluated and then whatever some-line outputs
will be evaluated. The dtb is getting generated twice since the line
that should generate it is within $() and the output of that is the
command itself (since arm/run outputs its command), so the command
gets executed again. Remove the $() to just execute dtb generation
once.

While mucking with arm/efi/run tidy it a bit by by removing the unused
sourcing of common.bash and the unnecessary 'set -e' (we check for and
propagate errors ourselves). Finally, make one reorganization change
and some whitespace fixes.

Fixes: 2607d2d6946a ("arm64: Add an efi/run script")
Fixes: 2e080dafec2a ("arm64: Use the provided fdt when booting through EFI")
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Signed-off-by: Andrew Jones <andrew.jones@linux.dev>
---
 arm/efi/run | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/arm/efi/run b/arm/efi/run
index 8b6512520026..e45cecfa3265 100755
--- a/arm/efi/run
+++ b/arm/efi/run
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-set -e
-
 if [ $# -eq 0 ]; then
 	echo "Usage $0 TEST_CASE [QEMU_ARGS]"
 	exit 2
@@ -13,7 +11,6 @@ if [ ! -f config.mak ]; then
 fi
 source config.mak
 source scripts/arch-run.bash
-source scripts/common.bash
 
 if [ -f /usr/share/qemu-efi-aarch64/QEMU_EFI.fd ]; then
 	DEFAULT_UEFI=/usr/share/qemu-efi-aarch64/QEMU_EFI.fd
@@ -27,6 +24,7 @@ fi
 : "${EFI_CASE:=$(basename $1 .efi)}"
 : "${EFI_TESTNAME:=$TESTNAME}"
 : "${EFI_TESTNAME:=$EFI_CASE}"
+: "${EFI_CASE_DIR:="$EFI_TEST/$EFI_TESTNAME"}"
 : "${EFI_VAR_GUID:=97ef3e03-7329-4a6a-b9ba-6c1fdcc5f823}"
 
 [ "$EFI_USE_ACPI" = "y" ] || EFI_USE_DTB=y
@@ -65,20 +63,18 @@ if [ "$EFI_CASE" = "_NO_FILE_4Uhere_" ]; then
 	exit
 fi
 
-: "${EFI_CASE_DIR:="$EFI_TEST/$EFI_TESTNAME"}"
 mkdir -p "$EFI_CASE_DIR"
-
 cp "$EFI_SRC/$EFI_CASE.efi" "$EFI_CASE_DIR/"
 echo "@echo -off" > "$EFI_CASE_DIR/startup.nsh"
 if [ "$EFI_USE_DTB" = "y" ]; then
 	qemu_args+=(-machine acpi=off)
 	FDT_BASENAME="dtb"
-	$(EFI_RUN=y $TEST_DIR/run -machine dumpdtb="$EFI_CASE_DIR/$FDT_BASENAME" "${qemu_args[@]}")
+	EFI_RUN=y $TEST_DIR/run -machine dumpdtb="$EFI_CASE_DIR/$FDT_BASENAME" "${qemu_args[@]}"
 	echo "setvar fdtfile -guid $EFI_VAR_GUID -rt =L\"$FDT_BASENAME\""  >> "$EFI_CASE_DIR/startup.nsh"
 fi
 echo "$EFI_CASE.efi" "${cmd_args[@]}" >> "$EFI_CASE_DIR/startup.nsh"
 
 EFI_RUN=y $TEST_DIR/run \
-       -bios "$EFI_UEFI" \
-       -drive file.dir="$EFI_CASE_DIR/",file.driver=vvfat,file.rw=on,format=raw,if=virtio \
-       "${qemu_args[@]}"
+	-bios "$EFI_UEFI" \
+	-drive file.dir="$EFI_CASE_DIR/",file.driver=vvfat,file.rw=on,format=raw,if=virtio \
+	"${qemu_args[@]}"
-- 
2.44.0