[PATCH 20/73] arm: use subsys_initcall in non-modular pl320 IPC code

[Paul Gortmaker]

The drivers/mailbox/pl320-ipc.o is dependent on config PL320_MBOX
which is declared as a bool.  Hence the code is never going to be
modular.  So using module_init as an alias for __initcall can be
somewhat misleading.

Fix this up now, so that we can relocate module_init from
init.h into module.h in the future.  If we don't do this, we'd
have to add module.h to obviously non-modular code, and that
would be a worse thing.  Also add an inclusion of init.h, as
that was previously implicit.

Note that direct use of __initcall is discouraged, vs. one
of the priority categorized subgroups.  As __initcall gets
mapped onto device_initcall, our use of subsys_initcall (which
seems to make sense for netfilter code) will thus change this
registration from level 6-device to level 4-subsys (i.e. slightly
earlier).  However no impact of that small difference is expected.

Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx>
---
 drivers/mailbox/pl320-ipc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mailbox/pl320-ipc.c b/drivers/mailbox/pl320-ipc.c
index d873cba..b2737a2 100644
--- a/drivers/mailbox/pl320-ipc.c
+++ b/drivers/mailbox/pl320-ipc.c
@@ -195,4 +195,4 @@ static int __init ipc_init(void)
 {
 	return amba_driver_register(&pl320_driver);
 }
-module_init(ipc_init);
+subsys_initcall(ipc_init);
-- 
1.8.4.1

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