[PATCH v3 2/3] kernel: remove platform_has() infrastructure

[Juergen Gross <jgross@xxxxxxxx>]

The only use case of the platform_has() infrastructure has been
removed again, so remove the whole feature.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 MAINTAINERS                            |  8 --------
 include/asm-generic/Kbuild             |  1 -
 include/asm-generic/platform-feature.h |  8 --------
 include/linux/platform-feature.h       | 15 --------------
 kernel/Makefile                        |  2 +-
 kernel/platform-feature.c              | 27 --------------------------
 6 files changed, 1 insertion(+), 60 deletions(-)
 delete mode 100644 include/asm-generic/platform-feature.h
 delete mode 100644 include/linux/platform-feature.h
 delete mode 100644 kernel/platform-feature.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 3cf9842d9233..1a800f6becd2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15835,14 +15835,6 @@ S:     Maintained
 F:     Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml
 F:     drivers/iio/chemical/pms7003.c
 
-PLATFORM FEATURE INFRASTRUCTURE
-M:     Juergen Gross <jgross@xxxxxxxx>
-S:     Maintained
-F:     arch/*/include/asm/platform-feature.h
-F:     include/asm-generic/platform-feature.h
-F:     include/linux/platform-feature.h
-F:     kernel/platform-feature.c
-
 PLDMFW LIBRARY
 M:     Jacob Keller <jacob.e.keller@xxxxxxxxx>
 S:     Maintained
diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild
index 8e47d483b524..302506bbc2a4 100644
--- a/include/asm-generic/Kbuild
+++ b/include/asm-generic/Kbuild
@@ -44,7 +44,6 @@ mandatory-y += msi.h
 mandatory-y += pci.h
 mandatory-y += percpu.h
 mandatory-y += pgalloc.h
-mandatory-y += platform-feature.h
 mandatory-y += preempt.h
 mandatory-y += rwonce.h
 mandatory-y += sections.h
diff --git a/include/asm-generic/platform-feature.h 
b/include/asm-generic/platform-feature.h
deleted file mode 100644
index 4b0af3d51588..000000000000
--- a/include/asm-generic/platform-feature.h
+++ /dev/null
@@ -1,8 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_GENERIC_PLATFORM_FEATURE_H
-#define _ASM_GENERIC_PLATFORM_FEATURE_H
-
-/* Number of arch specific feature flags. */
-#define PLATFORM_ARCH_FEAT_N   0
-
-#endif /* _ASM_GENERIC_PLATFORM_FEATURE_H */
diff --git a/include/linux/platform-feature.h b/include/linux/platform-feature.h
deleted file mode 100644
index 6ed859928b97..000000000000
--- a/include/linux/platform-feature.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _PLATFORM_FEATURE_H
-#define _PLATFORM_FEATURE_H
-
-#include <linux/bitops.h>
-#include <asm/platform-feature.h>
-
-/* The platform features are starting with the architecture specific ones. */
-#define PLATFORM_FEAT_N                                (0 + 
PLATFORM_ARCH_FEAT_N)
-
-void platform_set(unsigned int feature);
-void platform_clear(unsigned int feature);
-bool platform_has(unsigned int feature);
-
-#endif /* _PLATFORM_FEATURE_H */
diff --git a/kernel/Makefile b/kernel/Makefile
index a7e1f49ab2b3..318789c728d3 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -7,7 +7,7 @@ obj-y     = fork.o exec_domain.o panic.o \
            cpu.o exit.o softirq.o resource.o \
            sysctl.o capability.o ptrace.o user.o \
            signal.o sys.o umh.o workqueue.o pid.o task_work.o \
-           extable.o params.o platform-feature.o \
+           extable.o params.o \
            kthread.o sys_ni.o nsproxy.o \
            notifier.o ksysfs.o cred.o reboot.o \
            async.o range.o smpboot.o ucount.o regset.o
diff --git a/kernel/platform-feature.c b/kernel/platform-feature.c
deleted file mode 100644
index cb6a6c3e4fed..000000000000
--- a/kernel/platform-feature.c
+++ /dev/null
@@ -1,27 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-
-#include <linux/bitops.h>
-#include <linux/cache.h>
-#include <linux/export.h>
-#include <linux/platform-feature.h>
-
-#define PLATFORM_FEAT_ARRAY_SZ  BITS_TO_LONGS(PLATFORM_FEAT_N)
-static unsigned long __read_mostly platform_features[PLATFORM_FEAT_ARRAY_SZ];
-
-void platform_set(unsigned int feature)
-{
-       set_bit(feature, platform_features);
-}
-EXPORT_SYMBOL_GPL(platform_set);
-
-void platform_clear(unsigned int feature)
-{
-       clear_bit(feature, platform_features);
-}
-EXPORT_SYMBOL_GPL(platform_clear);
-
-bool platform_has(unsigned int feature)
-{
-       return test_bit(feature, platform_features);
-}
-EXPORT_SYMBOL_GPL(platform_has);
-- 
2.35.3