[PATCH AUTOSEL 5.9 087/147] genirq: Add stub for set_handle_irq() when !GENERIC_IRQ_MULTI_HANDLER

Sasha Levin
2020-10-27T00:41:13Z

From: Zhen Lei <thunder.leizhen@huawei.com>

[ Upstream commit ea0c80d1764449acf2f70fdb25aec33800cd0348 ]

In order to avoid compilation errors when a driver references set_handle_irq(),
but that the architecture doesn't select GENERIC_IRQ_MULTI_HANDLER,
add a stub function that will just WARN_ON_ONCE() if ever used.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
[maz: commit message]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200924071754.4509-2-thunder.leizhen@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/irq.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 1b7f4dfee35b3..b167baef88c0b 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -1252,6 +1252,12 @@ int __init set_handle_irq(void (*handle_irq)(struct pt_regs *));
* top-level IRQ handler.
*/
extern void (*handle_arch_irq)(struct pt_regs *) __ro_after_init;
+#else
+#define set_handle_irq(handle_irq) \
+ do { \
+ (void)handle_irq; \
+ WARN_ON(1); \
+ } while (0)
#endif

#endif /* _LINUX_IRQ_H */
--
2.25.1