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authorJeff Garzik <jeff@garzik.org>2007-10-25 04:06:13 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-25 15:10:17 -0700
commitde48844398f81cfdf087d56e12c920d620dae8d5 (patch)
treeb5fa6f7def2bcd53f5b044fc8d632b79654f5d08
parentc67c36e4b86872ac875716d502748b84b2541de5 (diff)
Permit silencing of __deprecated warnings.
The __deprecated marker is quite useful in highlighting the remnants of old APIs that want removing. However, it is quite normal for one or more years to pass, before the (usually ancient, bitrotten) code in question is either updated or deleted. Thus, like __must_check, add a Kconfig option that permits the silencing of this compiler warning. This change mimics the ifdef-ery and Kconfig defaults of MUST_CHECK as closely as possible. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/compiler.h6
-rw-r--r--lib/Kconfig.debug8
2 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index c811c8b979a..c68b67b86ef 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -101,6 +101,12 @@ extern void __chk_io_ptr(const volatile void __iomem *);
#undef __must_check
#define __must_check
#endif
+#ifndef CONFIG_ENABLE_WARN_DEPRECATED
+#undef __deprecated
+#undef __deprecated_for_modules
+#define __deprecated
+#define __deprecated_for_modules
+#endif
/*
* Allow us to avoid 'defined but not used' warnings on functions and data,
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1faa5087dc8..1e5f207b907 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -9,6 +9,14 @@ config PRINTK_TIME
operations. This is useful for identifying long delays
in kernel startup.
+config ENABLE_WARN_DEPRECATED
+ bool "Enable __deprecated logic"
+ default y
+ help
+ Enable the __deprecated logic in the kernel build.
+ Disable this to suppress the "warning: 'foo' is deprecated
+ (declared at kernel/power/somefile.c:1234)" messages.
+
config ENABLE_MUST_CHECK
bool "Enable __must_check logic"
default y