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coresight: trbe: Remove redundant disable call 

trbe_drain_and_disable_local() just clears TRBLIMITR and drains.
TRBLIMITR is already cleared on the next line after this call, so
replace it with only drain. This is so we can make a kvm call that has a
preempt enabled warning from set_trbe_disabled() in the next commit,
where trbe_reset_local() is called from a preemptible hotplug path.

Signed-off-by: James Clark <james.clark@linaro.org>
Link: https://lore.kernel.org/r/20250106142446.628923-5-james.clark@linaro.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
James Clark 2025-01-06 14:24:39 +00:00 committed by Marc Zyngier
parent c382ee674c
commit a2b579c41f
1 changed files with 1 additions and 1 deletions
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2
drivers/hwtracing/coresight/coresight-trbe.c
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@ -253,8 +253,8 @@ static void trbe_drain_and_disable_local(struct trbe_cpudata *cpudata)
static void trbe_reset_local(struct trbe_cpudata *cpudata) static void trbe_reset_local(struct trbe_cpudata *cpudata)
{ {
trbe_drain_and_disable_local(cpudata);
write_sysreg_s(0, SYS_TRBLIMITR_EL1); write_sysreg_s(0, SYS_TRBLIMITR_EL1);
trbe_drain_buffer();
write_sysreg_s(0, SYS_TRBPTR_EL1); write_sysreg_s(0, SYS_TRBPTR_EL1);
write_sysreg_s(0, SYS_TRBBASER_EL1); write_sysreg_s(0, SYS_TRBBASER_EL1);
write_sysreg_s(0, SYS_TRBSR_EL1); write_sysreg_s(0, SYS_TRBSR_EL1);