Commit 8bbfbc2d authored Jan 17, 2018 by Eugeniy Paltsev Committed by Vineet Gupta Jan 17, 2018

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>

parent b2cd1df6

arch/arc/mm/cache.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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);

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