Need add __delay() implementation, or can not pass allmodconfig in
next-20131118 tree.
The related error:
CC kernel/locking/spinlock_debug.o
kernel/locking/spinlock_debug.c: In function '__spin_lock_debug':
kernel/locking/spinlock_debug.c:114:3: error: implicit declaration of
function '__delay' [-Werror=implicit-function-declaration]
Signed-off-by: Chen Gang <[email protected]>
---
arch/hexagon/include/asm/delay.h | 1 +
arch/hexagon/kernel/time.c | 9 +++++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/hexagon/include/asm/delay.h b/arch/hexagon/include/asm/delay.h
index 5307971..8933b9b1 100644
--- a/arch/hexagon/include/asm/delay.h
+++ b/arch/hexagon/include/asm/delay.h
@@ -21,6 +21,7 @@
#include <asm/param.h>
+extern void __delay(unsigned long cycles);
extern void __udelay(unsigned long usecs);
#define udelay(usecs) __udelay((usecs))
diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c
index d0c4f5a..17fbf45 100644
--- a/arch/hexagon/kernel/time.c
+++ b/arch/hexagon/kernel/time.c
@@ -229,6 +229,15 @@ void __init time_init(void)
late_time_init = time_init_deferred;
}
+void __delay(unsigned long cycles)
+{
+ unsigned long long start = __vmgettime();
+
+ while ((__vmgettime() - start) < cycles)
+ cpu_relax();
+}
+EXPORT_SYMBOL(__delay);
+
/*
* This could become parametric or perhaps even computed at run-time,
* but for now we take the observed simulator jitter.
--
1.7.7.6
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