[PATCH v3 5/9] i2c: core: Keep PM domain powered during ->probe()
From: Ulf Hansson <hidden>
Date: 2014-10-13 14:02:06
Also in:
linux-pm, linux-samsung-soc
Subsystem:
i2c subsystem, the rest · Maintainers:
Andi Shyti, Linus Torvalds
To sucessfully probe some devices their corresponding PM domains may need to be powered. Use the dev_pm_domain_get|put() APIs, to control the behavior of the PM domain. Signed-off-by: Ulf Hansson <redacted> --- drivers/i2c/i2c-core.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 2f90ac6..37a52c6 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c@@ -646,8 +646,15 @@ static int i2c_device_probe(struct device *dev) status = dev_pm_domain_attach(&client->dev, true); if (status != -EPROBE_DEFER) { + status = dev_pm_domain_get(client->dev.pm_domain); + if (status) { + dev_pm_domain_detach(&client->dev, true); + return status; + } + status = driver->probe(client, i2c_match_id(driver->id_table, client)); + dev_pm_domain_put(client->dev.pm_domain); if (status) dev_pm_domain_detach(&client->dev, true); }
--
1.9.1