This is a note to let you know that I've just added the patch titled
i2c: s3c2410: enable RuntimePM before registering to the core
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i2c-s3c2410-enable-runtimepm-before-registering-to-the-core.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From eadd709f5d2e8aebb1b7bf49460e97a68d81a9b0 Mon Sep 17 00:00:00 2001
From: Wolfram Sang <[email protected]>
Date: Sat, 10 Oct 2015 08:24:23 +0100
Subject: i2c: s3c2410: enable RuntimePM before registering to the core
From: Wolfram Sang <[email protected]>
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 <[email protected]>
Tested-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Kukjin Kim <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/i2c/busses/i2c-s3c2410.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -1243,17 +1243,19 @@ static int s3c24xx_i2c_probe(struct plat
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);
s3c24xx_i2c_deregister_cpufreq(i2c);
clk_unprepare(i2c->clk);
return ret;
}
- platform_set_drvdata(pdev, i2c);
-
- pm_runtime_enable(&pdev->dev);
pm_runtime_enable(&i2c->adap.dev);
dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev));
Patches currently in stable-queue which might be from
[email protected] are
queue-4.2/i2c-rcar-enable-runtimepm-before-registering-to-the-core.patch
queue-4.2/i2c-s3c2410-enable-runtimepm-before-registering-to-the-core.patch
queue-4.2/i2c-designware-platdrv-enable-runtimepm-before-registering-to-the-core.patch
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