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powerpc/64s: Fix Power9 DD2.1 logic in DT CPU features 

I got the logic wrong in the DT CPU features code when I added the
Power9 DD2.1 feature. We should be setting the bit if we detect a
DD2.1, not clearing it if we detect a DD2.0.

This code isn't actually exercised at the moment so nothing is
actually broken.

Fixes: 3ffa9d9e2a ("powerpc/64s: Fix Power9 DD2.0 workarounds by adding DD2.1 feature")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
hifive-unleashed-5.1
Michael Ellerman 2017-11-22 23:17:01 +11:00
parent 73ce9aec65
commit 4d6c51b107
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/kernel/dt_cpu_ftrs.c
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@ -735,8 +735,8 @@ static __init void cpufeatures_cpu_quirks(void)
*/
if ((version & 0xffffff00) == 0x004e0100)
cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD1;
else if ((version & 0xffffefff) == 0x004e0200)
cur_cpu_spec->cpu_features &= ~CPU_FTR_POWER9_DD2_1;
else if ((version & 0xffffefff) == 0x004e0201)
cur_cpu_spec->cpu_features |= CPU_FTR_POWER9_DD2_1;
}
static void __init cpufeatures_setup_finished(void)