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ARC: Fix detection of dual-issue enabled 

As per PRM bit #0 ("D") in EXEC_CTRL enables dual-issue if set to 0,
otherwise if set to 1 all instructions are executed one at a time,
i.e. dual-issue is disabled.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Alexey Brodkin 2017-11-23 13:21:55 +03:00 committed by Vineet Gupta
parent 4fbd8d194f
commit 329b4130bc
1 changed files with 1 additions and 1 deletions
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2
arch/arc/kernel/setup.c
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@ -199,7 +199,7 @@ static void read_arc_build_cfg_regs(void)
unsigned int exec_ctrl; unsigned int exec_ctrl;
READ_BCR(AUX_EXEC_CTRL, exec_ctrl); READ_BCR(AUX_EXEC_CTRL, exec_ctrl);
cpu->extn.dual_enb = exec_ctrl & 1; cpu->extn.dual_enb = !(exec_ctrl & 1);
/* dual issue always present for this core */ /* dual issue always present for this core */
cpu->extn.dual = 1; cpu->extn.dual = 1;