[PATCH] of: add const to struct of_device_id.data - Uwe Kleine-König

From: "Uwe Kleine-König" <u.kleine-koenig-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
To: devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
	Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
Cc: kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org
Subject: [PATCH] of: add const to struct of_device_id.data
Date: Mon, 23 Apr 2012 10:56:21 +0200	[thread overview]
Message-ID: <1335171381-24869-1-git-send-email-u.kleine-koenig@pengutronix.de> (raw)

Drivers should never need to modify the data of a device id. So it can
be const which in turn allows more consts in the driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
Hello,

this might introduce warnings in drivers that access the data member
without using const, so this is definitly merge window material if it is
considered at all.

Best regards
Uwe

 include/linux/mod_devicetable.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 501da4c..183f411 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -222,7 +222,7 @@ struct of_device_id
 	char	type[32];
 	char	compatible[128];
 #ifdef __KERNEL__
-	void	*data;
+	const void *data;
 #else
 	kernel_ulong_t data;
 #endif
-- 
1.7.10

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