linux-kernel - [PATCH 1/2] dma: tegra: make tegra_dma.chip

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Date:	Wed, 29 Aug 2012 10:51:34 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	Vinod Koul <vinod.koul@...el.com>, djbw@...com,
	Stephen Warren <swarren@...dotorg.org>,
	linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org,
	kernel@...gutronix.de
Subject: [PATCH 1/2] dma: tegra: make tegra_dma.chip_data a pointer to const data

From: Laxman Dewangan <ldewangan@...dia.com>

This prepares *of_device_id.data becoming const. Without this change
the following warning would occur:

	drivers/dma/tegra20-apb-dma.c: In function 'tegra_dma_probe':
	drivers/dma/tegra20-apb-dma.c:1210:9: warning: assignment discards 'const' qualifier from pointer target type [enabled by default]

[ukl: split Laxman's patch to prevent warnings in the middle of the
series. Original patch was sent with msgid
1346217447-19730-1-git-send-email-ldewangan@...dia.com]

Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
Acked-by: Stephen Warren <swarren@...dotorg.org>
Acked-by: Vinod Koul <vinod.koul@...ux.intel.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 drivers/dma/tegra20-apb-dma.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c
index d52dbc6..29a39b8 100644
--- a/drivers/dma/tegra20-apb-dma.c
+++ b/drivers/dma/tegra20-apb-dma.c
@@ -201,7 +201,7 @@ struct tegra_dma {
 	struct clk			*dma_clk;
 	spinlock_t			global_lock;
 	void __iomem			*base_addr;
-	struct tegra_dma_chip_data	*chip_data;
+	const struct tegra_dma_chip_data *chip_data;
 
 	/* Some register need to be cache before suspend */
 	u32				reg_gen;
@@ -1197,7 +1197,7 @@ static int __devinit tegra_dma_probe(struct platform_device *pdev)
 	struct tegra_dma *tdma;
 	int ret;
 	int i;
-	struct tegra_dma_chip_data *cdata = NULL;
+	const struct tegra_dma_chip_data *cdata = NULL;
 
 	if (pdev->dev.of_node) {
 		const struct of_device_id *match;
-- 
1.7.10.4

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