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microblaze: delay.h fix udelay and ndelay for 8 bit args 

Based on:
"asm-generic: delay.h fix udelay and ndelay for 8 bit args"
(sha1: a87e553fab)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Michal Simek 2014-07-09 13:23:55 +02:00
parent 163e40743f
commit ad1d4358e0
1 changed files with 22 additions and 6 deletions
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28
arch/microblaze/include/asm/delay.h
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@ -61,13 +61,29 @@ extern inline void __udelay(unsigned int x)
extern void __bad_udelay(void); /* deliberately undefined */
extern void __bad_ndelay(void); /* deliberately undefined */
#define udelay(n) (__builtin_constant_p(n) ? \
((n) > __MAX_UDELAY ? __bad_udelay() : __udelay((n) * (19 * HZ))) : \
__udelay((n) * (19 * HZ)))
#define udelay(n) \
({ \
if (__builtin_constant_p(n)) { \
if ((n) / __MAX_UDELAY >= 1) \
__bad_udelay(); \
else \
__udelay((n) * (19 * HZ)); \
} else { \
__udelay((n) * (19 * HZ)); \
} \
})
#define ndelay(n) (__builtin_constant_p(n) ? \
((n) > __MAX_NDELAY ? __bad_ndelay() : __udelay((n) * HZ)) : \
__udelay((n) * HZ))
#define ndelay(n) \
({ \
if (__builtin_constant_p(n)) { \
if ((n) / __MAX_NDELAY >= 1) \
__bad_ndelay(); \
else \
__udelay((n) * HZ); \
} else { \
__udelay((n) * HZ); \
} \
})
#define muldiv(a, b, c) (((a)*(b))/(c))