linux-kernel - [PATCH] isa: Call isa_bus_init before dependent ISA bus drivers register

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Message-ID: <20160511210140.GA18692@sophia>
Date:	Wed, 11 May 2016 17:01:40 -0400
From:	William Breathitt Gray <vilhelm.gray@...il.com>
To:	gregkh@...uxfoundation.org
Cc:	rene.herman@...access.nl, linux-kernel@...r.kernel.org
Subject: [PATCH] isa: Call isa_bus_init before dependent ISA bus drivers
 register

The isa_bus_init function must be called before drivers which utilize
the ISA bus driver are registered. A race condition for initilization
exists if device_initcall is used (the isa_bus_init callback is placed
in the same initcall level as dependent drivers which use module_init).
This patch ensures that isa_bus_init is called first by utilizing
postcore_initcall in favor of device_initcall.

Fixes: a5117ba7da37 ("[PATCH] Driver model: add ISA bus")
Cc: Rene Herman <rene.herman@...access.nl>
Signed-off-by: William Breathitt Gray <vilhelm.gray@...il.com>
---
 drivers/base/isa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/isa.c b/drivers/base/isa.c
index 91dba65d..cd6ccdc 100644
--- a/drivers/base/isa.c
+++ b/drivers/base/isa.c
@@ -180,4 +180,4 @@ static int __init isa_bus_init(void)
 	return error;
 }

-device_initcall(isa_bus_init);
+postcore_initcall(isa_bus_init);
-- 
2.7.3