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authorTakashi Iwai <tiwai@suse.de>2021-06-24 11:02:45 +0300
committerTakashi Iwai <tiwai@suse.de>2021-06-24 11:02:45 +0300
commit5c89c2c7fbfa9124dd521c375b9c82b9ed75bc28 (patch)
tree75d09ba90c72e75b3d488edd2c37c96c3f268952 /tools/include/linux/const.h
parent3099406ef4832124ce572cfbbc914e8a385ca38f (diff)
parent3b7961a326f8a7e03f54a19f02fedae8d488b80f (diff)
downloadlinux-5c89c2c7fbfa9124dd521c375b9c82b9ed75bc28.tar.xz
Merge tag 'asoc-fix-v5.13-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Fixes for v5.13 A final batch of fixes for v5.13, this is larger than I'd like due to the fixes for a series of suspend issues that Intel turned up in their testing this week.
Diffstat (limited to 'tools/include/linux/const.h')
-rw-r--r--tools/include/linux/const.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/include/linux/const.h b/tools/include/linux/const.h
index 81b8aae5a855..435ddd72d2c4 100644
--- a/tools/include/linux/const.h
+++ b/tools/include/linux/const.h
@@ -3,4 +3,12 @@
#include <vdso/const.h>
+/*
+ * This returns a constant expression while determining if an argument is
+ * a constant expression, most importantly without evaluating the argument.
+ * Glory to Martin Uecker <Martin.Uecker@med.uni-goettingen.de>
+ */
+#define __is_constexpr(x) \
+ (sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8)))
+
#endif /* _LINUX_CONST_H */