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ACPI: tables: Add custom DSDT file as makefile prerequisite

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[ Upstream commit d1059c1b11 ]

A custom DSDT file is mostly used during development or debugging,
and in that case it is quite likely to want to rebuild the kernel
after changing ONLY the content of the DSDT.

This patch adds the custom DSDT as a prerequisite to tables.o
to ensure a rebuild if the DSDT file is updated. Make will merge
the prerequisites from multiple rules for the same target.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Richard Fitzgerald
2021-06-21 16:24:33 +01:00
committed by Chris
parent 66c7edc56c
commit da4729d69d
1 changed files with 5 additions and 0 deletions
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5
drivers/acpi/Makefile
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@@ -7,6 +7,11 @@ ccflags-$(CONFIG_ACPI_DEBUG) += -DACPI_DEBUG_OUTPUT
#
# ACPI Boot-Time Table Parsing
#
ifeq ($(CONFIG_ACPI_CUSTOM_DSDT),y)
tables.o: $(src)/../../include/$(subst $\",,$(CONFIG_ACPI_CUSTOM_DSDT_FILE)) ;
endif
obj-$(CONFIG_ACPI) += tables.o
obj-$(CONFIG_X86) += blacklist.o