aleph/lkl_linux
1
0
Fork 0
mirror of https://github.com/lkl/linux.git synced 2025-12-19 16:13:19 +09:00
Code Issues Packages Projects Releases Wiki Activity

mailbox: qcom-ipcc: flag IRQ NO_THREAD

Browse Source 
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>
This commit is contained in:
Eric Chanudet
2022-10-03 13:08:49 -04:00
committed by Jassi Brar
parent 8ac1111055
commit b8ae88e1e7
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/mailbox/qcom-ipcc.c
View File

@@ -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;