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ARCv2: cache: fix slc_entire_op: flush only instead of flush-n-inv 

slc_entire_op with OP_FLUSH command also invalidates it.

This is a preventive fix as the current use of slc_entire_op is only
with OP_FLUSH_N_INV where the invalidate is required.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
[vgupta: fixed changelog]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Eugeniy Paltsev 2018-01-17 16:39:17 +03:00 committed by Vineet Gupta
parent b2cd1df660
commit 8bbfbc2df6
1 changed files with 4 additions and 1 deletions
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5
arch/arc/mm/cache.c
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@ -780,7 +780,10 @@ noinline static void slc_entire_op(const int op)
write_aux_reg(r, ctrl);
write_aux_reg(ARC_REG_SLC_INVALIDATE, 1);
if (op & OP_INV) /* Inv or flush-n-inv use same cmd reg */
write_aux_reg(ARC_REG_SLC_INVALIDATE, 0x1);
else
write_aux_reg(ARC_REG_SLC_FLUSH, 0x1);
/* Make sure "busy" bit reports correct stataus, see STAR 9001165532 */
read_aux_reg(r);