bitops: import BITS_PER_TYPE() macro from linux

This macro will be used by include/linux/bitfield.h header.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 29e0da48de855b2ca6eb00d35871d1fb1282791d..52eea4f8380ab1deb15d991c142293d2c0c80602 100644 (file)
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -15,6 +15,7 @@
 #define BIT_ULL_MASK(nr)       (1ULL << ((nr) % BITS_PER_LONG_LONG))
 #define BIT_ULL_WORD(nr)       ((nr) / BITS_PER_LONG_LONG)
 #define BITS_PER_BYTE          8
+#define BITS_PER_TYPE(type)    (sizeof(type) * BITS_PER_BYTE)
 #define BITS_TO_LONGS(nr)      DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long))
 #endif