[PATCH] relay: select CONFIG_IRQ_WORK

From: Arnd Bergmann
Date: Mon Sep 12 2016 - 11:41:24 EST

The relay code was changed to use irq_work, and it now fails to build
if that is disabled:

kernel/relay.o: In function `__relay_reset':
relay.c:(.text.__relay_reset+0xb0): undefined reference to `irq_work_sync'
kernel/relay.o: In function `relay_close_buf':
relay.c:(.text.relay_close_buf+0x14): undefined reference to `irq_work_sync'
kernel/relay.o: In function `relay_switch_subbuf':

This adds the necessary Kconfig select statement.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Fixes: c37d49250a7b ("relay: Use irq_work instead of plain timer for deferred wakeup")
init/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/init/Kconfig b/init/Kconfig
index 3a00753bc38e..602c42bf1d30 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1276,6 +1276,7 @@ config SYSFS_DEPRECATED_V2

config RELAY
bool "Kernel->user space relay support (formerly relayfs)"
+ select IRQ_WORK
This option enables support for relay interface support in
certain file systems (such as debugfs).