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authorEric Chanudet <echanude@redhat.com>2022-10-03 13:08:49 -0400
committerJassi Brar <jaswinder.singh@linaro.org>2022-10-05 21:51:58 -0500
commitb8ae88e1e75e5cb7a6df5298ab75334362ed631c (patch)
treee50c1201e4a83a3d7e332ced1ba6ca7c2ee54c72 /drivers/mailbox
parent8ac1111055afc863c78e389b051d843babbf2ca9 (diff)
mailbox: qcom-ipcc: flag IRQ NO_THREAD
PREEMPT_RT forces qcom-ipcc's handler to be threaded with interrupts enabled, which triggers a warning in __handle_irq_event_percpu(): irq 173 handler irq_default_primary_handler+0x0/0x10 enabled interrupts WARNING: CPU: 0 PID: 77 at kernel/irq/handle.c:161 __handle_irq_event_percpu+0x4c4/0x4d0 Mark it IRQF_NO_THREAD to avoid running the handler in a threaded context with threadirqs or PREEMPT_RT enabled. Signed-off-by: Eric Chanudet <echanude@redhat.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'drivers/mailbox')
-rw-r--r--drivers/mailbox/qcom-ipcc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c
index 31d58b7d55fe..7e27acf6c0cc 100644
--- a/drivers/mailbox/qcom-ipcc.c
+++ b/drivers/mailbox/qcom-ipcc.c
@@ -308,7 +308,8 @@ static int qcom_ipcc_probe(struct platform_device *pdev)
goto err_mbox;
ret = devm_request_irq(&pdev->dev, ipcc->irq, qcom_ipcc_irq_fn,
- IRQF_TRIGGER_HIGH | IRQF_NO_SUSPEND, name, ipcc);
+ IRQF_TRIGGER_HIGH | IRQF_NO_SUSPEND |
+ IRQF_NO_THREAD, name, ipcc);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to register the irq: %d\n", ret);
goto err_req_irq;