cache_wback_all() is a local function and it is called from
cache_control() only, which is in turn jumps to P2 area.
The change fixes an issue when cache_wback_all() returns from P2 to
P1, however cache_control() continues to manipulate with CCR
register, according to the User's Manual this is restricted.
Signed-off-by: Vladimir Zapolskiy <v...@mleia.com>
---
arch/sh/cpu/sh4/cache.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/sh/cpu/sh4/cache.c b/arch/sh/cpu/sh4/cache.c
index 50695b6..7750f0f 100644
--- a/arch/sh/cpu/sh4/cache.c
+++ b/arch/sh/cpu/sh4/cache.c
@@ -18,10 +18,10 @@ static inline void cache_wback_all(void)
{
unsigned long addr, data, i, j;
- jump_to_P2();
- for (i = 0; i < CACHE_OC_NUM_ENTRIES; i++){
+ for (i = 0; i < CACHE_OC_NUM_ENTRIES; i++) {
for (j = 0; j < CACHE_OC_NUM_WAYS; j++) {
- addr = CACHE_OC_ADDRESS_ARRAY | (j <<
CACHE_OC_WAY_SHIFT)
+ addr = CACHE_OC_ADDRESS_ARRAY
+ | (j << CACHE_OC_WAY_SHIFT)
| (i << CACHE_OC_ENTRY_SHIFT);
data = inl(addr);
if (data & CACHE_UPDATED) {
@@ -30,10 +30,8 @@ static inline void cache_wback_all(void)
}
}
}
- back_to_P1();
}
-
#define CACHE_ENABLE 0
#define CACHE_DISABLE 1
--
2.10.2
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