linux-kernel - [PATCH 4.0 051/105] i2c: s3c2410: fix oops in suspend callback for non-dt platforms

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Date:	Fri, 19 Jun 2015 13:35:41 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Vasily Khoruzhick <anarsoul@...il.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH 4.0 051/105] i2c: s3c2410: fix oops in suspend callback for non-dt platforms

4.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vasily Khoruzhick <anarsoul@...il.com>

commit 8d487a43c36b54a029d74ad3b0a6a9d1253e728a upstream.

Initialize sysreg by default, otherwise driver will crash in suspend
callback when not using DT.

Signed-off-by: Vasily Khoruzhick <anarsoul@...il.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
Fixes: a7750c3ef01223 ("i2c: s3c2410: Handle i2c sys_cfg register in i2c driver")
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/i2c/busses/i2c-s3c2410.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -1143,6 +1143,7 @@ static int s3c24xx_i2c_probe(struct plat
 		return -ENOMEM;
 
 	i2c->quirks = s3c24xx_get_device_quirks(pdev);
+	i2c->sysreg = ERR_PTR(-ENOENT);
 	if (pdata)
 		memcpy(i2c->pdata, pdata, sizeof(*pdata));
 	else


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