| .. | .. |
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| 18 | 18 | #endif |
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| 19 | 19 | |
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| 20 | 20 | #ifdef CONFIG_64BIT |
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| 21 | | -unsigned long __xchg64(unsigned long x, unsigned long *ptr) |
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| 21 | +unsigned long __xchg64(unsigned long x, volatile unsigned long *ptr) |
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| 22 | 22 | { |
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| 23 | 23 | unsigned long temp, flags; |
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| 24 | 24 | |
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| .. | .. |
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| 30 | 30 | } |
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| 31 | 31 | #endif |
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| 32 | 32 | |
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| 33 | | -unsigned long __xchg32(int x, int *ptr) |
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| 33 | +unsigned long __xchg32(int x, volatile int *ptr) |
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| 34 | 34 | { |
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| 35 | 35 | unsigned long flags; |
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| 36 | 36 | long temp; |
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| .. | .. |
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| 43 | 43 | } |
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| 44 | 44 | |
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| 45 | 45 | |
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| 46 | | -unsigned long __xchg8(char x, char *ptr) |
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| 46 | +unsigned long __xchg8(char x, volatile char *ptr) |
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| 47 | 47 | { |
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| 48 | 48 | unsigned long flags; |
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| 49 | 49 | long temp; |
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