linux-kernel - [PATCH v2 5/5] logic_pio: Build into a library

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Date:   Mon, 28 Oct 2019 20:10:05 +0800
From:   John Garry <john.garry@...wei.com>
To:     <xuwei5@...wei.com>
CC:     <linuxarm@...wei.com>, <linux-kernel@...r.kernel.org>,
        <olof@...om.net>, <bhelgaas@...gle.com>, <arnd@...db.de>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH v2 5/5] logic_pio: Build into a library

Object file logic_pio.o is always built.

Ideally the object file should only be built when required. This is
tricky, as that would be for archs which define PCI_IOBASE, but no common
config option exists for that.

For now, continue to always build but at least ensure the symbols are not
included in the vmlinux when not referenced.

Suggested-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: John Garry <john.garry@...wei.com>
---
 lib/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Makefile b/lib/Makefile
index c5892807e06f..27645143d8bb 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -108,7 +108,7 @@ obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o
 obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
 obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
 
-obj-y += logic_pio.o
+lib-y += logic_pio.o
 
 obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
 
-- 
2.17.1