Hi all, After merging the mailbox tree, today's linux-next build (x86_64 allmodconfig) failed like this: drivers/mailbox/mtk-tinysys-mailbox.c: In function 'mtk_tinysys_mhu_mbox_startup': drivers/mailbox/mtk-tinysys-mailbox.c:95:9: error: implicit declaration of function 'irq_clear_status_flags' [-Wimplicit-function-declaration] 95 | irq_clear_status_flags(priv->irq, IRQ_NOAUTOEN); | ^~~~~~~~~~~~~~~~~~~~~~ drivers/mailbox/mtk-tinysys-mailbox.c:95:43: error: 'IRQ_NOAUTOEN' undeclared (first use in this function); did you mean 'IRQF_NO_AUTOEN'? 95 | irq_clear_status_flags(priv->irq, IRQ_NOAUTOEN); | ^~~~~~~~~~~~ | IRQF_NO_AUTOEN drivers/mailbox/mtk-tinysys-mailbox.c:95:43: note: each undeclared identifier is reported only once for each function it appears in Caused by commit 43a9f5ab3d17 ("mailbox: Add MediaTek TinySYS MHU-like Mailbox") Forgot to include linux/irq.h ... I have used the mailbox tree from next-20250718 for today. -- Cheers, Stephen Rothwell