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soc: qcom: rpmh-rsc: Unconditionally clear _TRIGGER bit for TCS

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[ Upstream commit f87412d18edb5b8393eb8cb1c2d4a54f90185a21 ]

Unconditionally clear the TCS_AMC_MODE_TRIGGER bit when a
transaction completes. Previously this bit was only cleared when
a wake TCS was borrowed as an AMC TCS but not for dedicated
AMC TCS. Leaving this bit set for AMC TCS and entering deeper low
power modes can generate a false completion IRQ.

Prevent this scenario by always clearing the TCS_AMC_MODE_TRIGGER
bit upon receiving a completion IRQ.

Fixes: 15b3bf61b8d4 ("soc: qcom: rpmh-rsc: Clear active mode configuration for wake TCS")
Signed-off-by: Sneh Mankad <sneh.mankad@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250825-rpmh_rsc_change-v1-1-138202c31bf6@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sneh Mankad 2025-08-25 11:53:50 +05:30 • committed by Greg Kroah-Hartman
commit cdf96ac33a
1 changed files with 2 additions and 5 deletions
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7
drivers/soc/qcom/rpmh-rsc.c
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@ -265,13 +265,10 @@ static irqreturn_t tcs_tx_done(int irq, void *p)
trace_rpmh_tx_done(drv, i, req, err);
/*
* If wake tcs was re-purposed for sending active
* votes, clear AMC trigger & enable modes and
/* Clear AMC trigger & enable modes and
* disable interrupt for this TCS
*/
if (!drv->tcs[ACTIVE_TCS].num_tcs)
__tcs_set_trigger(drv, i, false);
__tcs_set_trigger(drv, i, false);
skip:
/* Reclaim the TCS */
write_tcs_reg(drv, RSC_DRV_CMD_ENABLE, i, 0);