[PATCH 3.16.y-ckt 33/94] i2c: s3c2410: enable RuntimePM before registering to the core

From: Luis Henriques
Date: Fri Nov 13 2015 - 05:11:44 EST

3.16.7-ckt20 -stable review patch. If anyone has any objections, please let me know.


From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

commit eadd709f5d2e8aebb1b7bf49460e97a68d81a9b0 upstream.

The core may register clients attached to this master which may use
funtionality from the master. So, RuntimePM must be enabled before, otherwise
this will fail. While here, move drvdata, too.

Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Tested-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
Acked-by: Kukjin Kim <kgene@xxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
drivers/i2c/busses/i2c-s3c2410.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 8bfd5234d305..aeb84c37e9b9 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -1223,17 +1223,19 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
i2c->adap.nr = i2c->pdata->bus_num;
i2c->adap.dev.of_node = pdev->dev.of_node;

+ platform_set_drvdata(pdev, i2c);
+ pm_runtime_enable(&pdev->dev);
ret = i2c_add_numbered_adapter(&i2c->adap);
if (ret < 0) {
dev_err(&pdev->dev, "failed to add bus to i2c core\n");
+ pm_runtime_disable(&pdev->dev);
return ret;

- platform_set_drvdata(pdev, i2c);
- pm_runtime_enable(&pdev->dev);

dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev));
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