[PATCH 3.19.y-ckt 081/155] i2c: rcar: enable RuntimePM before registering to the core

From: Kamal Mostafa
Date: Thu Nov 12 2015 - 18:49:16 EST

3.19.8-ckt10 -stable review patch. If anyone has any objections, please let me know.


From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>

commit 4f7effddf4549d57114289f273710f077c4c330a 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.

Reported-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
drivers/i2c/busses/i2c-rcar.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 71a6e07..7a37ea1 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -690,15 +690,16 @@ static int rcar_i2c_probe(struct platform_device *pdev)
return ret;

+ pm_runtime_enable(dev);
+ platform_set_drvdata(pdev, priv);
ret = i2c_add_numbered_adapter(adap);
if (ret < 0) {
dev_err(dev, "reg adap failed: %d\n", ret);
+ pm_runtime_disable(dev);
return ret;

- pm_runtime_enable(dev);
- platform_set_drvdata(pdev, priv);
dev_info(dev, "probed\n");

return 0;

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