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remoteproc: qcom: q6v5: Avoid handling handover twice

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[ Upstream commit 54898664e1eb6b5b3e6cdd9343c6eb15da776153 ]

A remoteproc could theoretically signal handover twice. This is unexpected
and would break the reference counting for the handover resources (power
domains, clocks, regulators, etc), so add a check to prevent that from
happening.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Link: https://lore.kernel.org/r/20250820-rproc-qcom-q6v5-fixes-v2-2-910b1a3aff71@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stephan Gerhold 2025-08-20 18:02:34 +02:00 • committed by Greg Kroah-Hartman
commit b10afc5fb5
1 changed files with 5 additions and 0 deletions
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5
drivers/remoteproc/qcom_q6v5.c
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@ -121,6 +121,11 @@ static irqreturn_t q6v5_handover_interrupt(int irq, void *data)
{
struct qcom_q6v5 *q6v5 = data;
if (q6v5->handover_issued) {
dev_err(q6v5->dev, "Handover signaled, but it already happened\n");
return IRQ_HANDLED;
}
if (q6v5->handover)
q6v5->handover(q6v5);