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x86/UV2: Fix BAU destination timeout initialization 

Move the call to enable_timeouts() forward so that
BAU_MISC_CONTROL is initialized before using it in
calculate_destination_timeout().

Fix the calculation of a BAU destination timeout
for UV2 (in calculate_destination_timeout()).

Signed-off-by: Cliff Wickman <cpw@sgi.com>
Link: http://lkml.kernel.org/r/20120116211848.GB5767@sgi.com
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Cliff Wickman 2012-01-16 15:18:48 -06:00 committed by Ingo Molnar
parent da87c937e5
commit d059f9fa84
1 changed files with 7 additions and 6 deletions
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13
arch/x86/platform/uv/tlb_uv.c
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@ -1617,14 +1617,14 @@ static int calculate_destination_timeout(void)
ts_ns = base * mult1 * mult2;
ret = ts_ns / 1000;
} else {
/* 4 bits 0/1 for 10/80us, 3 bits of multiplier */
mmr_image = uv_read_local_mmr(UVH_AGING_PRESCALE_SEL);
/* 4 bits 0/1 for 10/80us base, 3 bits of multiplier */
mmr_image = uv_read_local_mmr(UVH_LB_BAU_MISC_CONTROL);
mmr_image = (mmr_image & UV_SA_MASK) >> UV_SA_SHFT;
if (mmr_image & (1L << UV2_ACK_UNITS_SHFT))
mult1 = 80;
base = 80;
else
mult1 = 10;
base = mmr_image & UV2_ACK_MASK;
base = 10;
mult1 = mmr_image & UV2_ACK_MASK;
ret = mult1 * base;
}
return ret;
@ -1886,6 +1886,8 @@ static int __init uv_bau_init(void)
uv_base_pnode = uv_blade_to_pnode(uvhub);
}
enable_timeouts();
if (init_per_cpu(nuvhubs, uv_base_pnode)) {
nobau = 1;
return 0;
@ -1896,7 +1898,6 @@ static int __init uv_bau_init(void)
if (uv_blade_nr_possible_cpus(uvhub))
init_uvhub(uvhub, vector, uv_base_pnode);
enable_timeouts();
alloc_intr_gate(vector, uv_bau_message_intr1);
for_each_possible_blade(uvhub) {