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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-24 13:18:03 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-12-24 13:18:03 -0500
commit99f14bd4d1b2a1b1b6cd508e08efdbc5e3919198 (patch)
treea81b9b315127132a84454746043c98990bcd56b9 /include/linux/math64.h
parent3482528e9aced9234d4e2a4a9538c882a9aa5aa2 (diff)
parent413541dd66d51f791a0b169d9b9014e4f56be13c (diff)
Merge 3.13-rc5 into usb-next
This resolves the merge issue with drivers/usb/host/ohci-at91.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/math64.h')
-rw-r--r--include/linux/math64.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/math64.h b/include/linux/math64.h
index 69ed5f5e9f6e..c45c089bfdac 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -133,4 +133,34 @@ __iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder)
133 return ret; 133 return ret;
134} 134}
135 135
136#if defined(CONFIG_ARCH_SUPPORTS_INT128) && defined(__SIZEOF_INT128__)
137
138#ifndef mul_u64_u32_shr
139static inline u64 mul_u64_u32_shr(u64 a, u32 mul, unsigned int shift)
140{
141 return (u64)(((unsigned __int128)a * mul) >> shift);
142}
143#endif /* mul_u64_u32_shr */
144
145#else
146
147#ifndef mul_u64_u32_shr
148static inline u64 mul_u64_u32_shr(u64 a, u32 mul, unsigned int shift)
149{
150 u32 ah, al;
151 u64 ret;
152
153 al = a;
154 ah = a >> 32;
155
156 ret = ((u64)al * mul) >> shift;
157 if (ah)
158 ret += ((u64)ah * mul) << (32 - shift);
159
160 return ret;
161}
162#endif /* mul_u64_u32_shr */
163
164#endif
165
136#endif /* _LINUX_MATH64_H */ 166#endif /* _LINUX_MATH64_H */