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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-06 14:22:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-06 14:22:15 -0800
commit9cf5c095b65da63c08b928a7d0015d5d5dca8a66 (patch)
treef151dc13ce26c0252f41aeaf612dd3e9762c29dd /include/asm-generic
parent22402cd0af685c1a5d067c87db3051db7fff7709 (diff)
parent4008cb3ad223e39273b9cdfa578d04861b197c86 (diff)
Merge tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic cleanups from Arnd Bergmann: "The asm-generic changes for 4.4 are mostly a series from Christoph Hellwig to clean up various abuses of headers in there. The patch to rename the io-64-nonatomic-*.h headers caused some conflicts with new users, so I added a workaround that we can remove in the next merge window. The only other patch is a warning fix from Marek Vasut" * tag 'asm-generic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: temporarily add back asm-generic/io-64-nonatomic*.h asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations gpio-mxc: stop including <asm-generic/bug> n_tracesink: stop including <asm-generic/bug> n_tracerouter: stop including <asm-generic/bug> mlx5: stop including <asm-generic/kmap_types.h> hifn_795x: stop including <asm-generic/kmap_types.h> drbd: stop including <asm-generic/kmap_types.h> move count_zeroes.h out of asm-generic move io-64-nonatomic*.h out of asm-generic
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/bitops/count_zeros.h57
-rw-r--r--include/asm-generic/cmpxchg.h11
-rw-r--r--include/asm-generic/io-64-nonatomic-hi-lo.h34
-rw-r--r--include/asm-generic/io-64-nonatomic-lo-hi.h34
4 files changed, 11 insertions, 125 deletions
diff --git a/include/asm-generic/bitops/count_zeros.h b/include/asm-generic/bitops/count_zeros.h
deleted file mode 100644
index 97520d21fe62..000000000000
--- a/include/asm-generic/bitops/count_zeros.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/* Count leading and trailing zeros functions
- *
- * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#ifndef _ASM_GENERIC_BITOPS_COUNT_ZEROS_H_
-#define _ASM_GENERIC_BITOPS_COUNT_ZEROS_H_
-
-#include <asm/bitops.h>
-
-/**
- * count_leading_zeros - Count the number of zeros from the MSB back
- * @x: The value
- *
- * Count the number of leading zeros from the MSB going towards the LSB in @x.
- *
- * If the MSB of @x is set, the result is 0.
- * If only the LSB of @x is set, then the result is BITS_PER_LONG-1.
- * If @x is 0 then the result is COUNT_LEADING_ZEROS_0.
- */
-static inline int count_leading_zeros(unsigned long x)
-{
- if (sizeof(x) == 4)
- return BITS_PER_LONG - fls(x);
- else
- return BITS_PER_LONG - fls64(x);
-}
-
-#define COUNT_LEADING_ZEROS_0 BITS_PER_LONG
-
-/**
- * count_trailing_zeros - Count the number of zeros from the LSB forwards
- * @x: The value
- *
- * Count the number of trailing zeros from the LSB going towards the MSB in @x.
- *
- * If the LSB of @x is set, the result is 0.
- * If only the MSB of @x is set, then the result is BITS_PER_LONG-1.
- * If @x is 0 then the result is COUNT_TRAILING_ZEROS_0.
- */
-static inline int count_trailing_zeros(unsigned long x)
-{
-#define COUNT_TRAILING_ZEROS_0 (-1)
-
- if (sizeof(x) == 4)
- return ffs(x);
- else
- return (x != 0) ? __ffs(x) : COUNT_TRAILING_ZEROS_0;
-}
-
-#endif /* _ASM_GENERIC_BITOPS_COUNT_ZEROS_H_ */
diff --git a/include/asm-generic/cmpxchg.h b/include/asm-generic/cmpxchg.h
index 3766ab34aa45..e5f9080e8e86 100644
--- a/include/asm-generic/cmpxchg.h
+++ b/include/asm-generic/cmpxchg.h
@@ -79,8 +79,10 @@ unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
}
}
-#define xchg(ptr, x) \
- ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+#define xchg(ptr, x) ({ \
+ ((__typeof__(*(ptr))) \
+ __xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))); \
+})
#endif /* xchg */
@@ -90,9 +92,10 @@ unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
#include <asm-generic/cmpxchg-local.h>
#ifndef cmpxchg_local
-#define cmpxchg_local(ptr, o, n) \
+#define cmpxchg_local(ptr, o, n) ({ \
((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
- (unsigned long)(n), sizeof(*(ptr))))
+ (unsigned long)(n), sizeof(*(ptr)))); \
+})
#endif
#ifndef cmpxchg64_local
diff --git a/include/asm-generic/io-64-nonatomic-hi-lo.h b/include/asm-generic/io-64-nonatomic-hi-lo.h
index 2e29d13fc154..32b73abce1b0 100644
--- a/include/asm-generic/io-64-nonatomic-hi-lo.h
+++ b/include/asm-generic/io-64-nonatomic-hi-lo.h
@@ -1,32 +1,2 @@
-#ifndef _ASM_IO_64_NONATOMIC_HI_LO_H_
-#define _ASM_IO_64_NONATOMIC_HI_LO_H_
-
-#include <linux/io.h>
-#include <asm-generic/int-ll64.h>
-
-static inline __u64 hi_lo_readq(const volatile void __iomem *addr)
-{
- const volatile u32 __iomem *p = addr;
- u32 low, high;
-
- high = readl(p + 1);
- low = readl(p);
-
- return low + ((u64)high << 32);
-}
-
-static inline void hi_lo_writeq(__u64 val, volatile void __iomem *addr)
-{
- writel(val >> 32, addr + 4);
- writel(val, addr);
-}
-
-#ifndef readq
-#define readq hi_lo_readq
-#endif
-
-#ifndef writeq
-#define writeq hi_lo_writeq
-#endif
-
-#endif /* _ASM_IO_64_NONATOMIC_HI_LO_H_ */
+/* XXX: delete asm-generic/io-64-nonatomic-hi-lo.h after converting new users */
+#include <linux/io-64-nonatomic-hi-lo.h>
diff --git a/include/asm-generic/io-64-nonatomic-lo-hi.h b/include/asm-generic/io-64-nonatomic-lo-hi.h
index 0efacff0a1ce..55a627c37721 100644
--- a/include/asm-generic/io-64-nonatomic-lo-hi.h
+++ b/include/asm-generic/io-64-nonatomic-lo-hi.h
@@ -1,32 +1,2 @@
-#ifndef _ASM_IO_64_NONATOMIC_LO_HI_H_
-#define _ASM_IO_64_NONATOMIC_LO_HI_H_
-
-#include <linux/io.h>
-#include <asm-generic/int-ll64.h>
-
-static inline __u64 lo_hi_readq(const volatile void __iomem *addr)
-{
- const volatile u32 __iomem *p = addr;
- u32 low, high;
-
- low = readl(p);
- high = readl(p + 1);
-
- return low + ((u64)high << 32);
-}
-
-static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr)
-{
- writel(val, addr);
- writel(val >> 32, addr + 4);
-}
-
-#ifndef readq
-#define readq lo_hi_readq
-#endif
-
-#ifndef writeq
-#define writeq lo_hi_writeq
-#endif
-
-#endif /* _ASM_IO_64_NONATOMIC_LO_HI_H_ */
+/* XXX: delete asm-generic/io-64-nonatomic-lo-hi.h after converting new users */
+#include <linux/io-64-nonatomic-lo-hi.h>

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