| Message ID | 1466165027-17917-9-git-send-email-jonathanh@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Jun 17, 2016 at 01:03:42PM +0100, Jon Hunter wrote: > If the 'i2c-bus' device-tree node is present for an I2C adapter then > parse this subnode for I2C slaves. > > Signed-off-by: Jon Hunter <jonathanh@nvidia.com> > --- > drivers/i2c/i2c-core.c | 11 +++++++++-- > 1 file changed, 9 insertions(+), 2 deletions(-) > > diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c > index 952d2f0c02c5..f552d97bad32 100644 > --- a/drivers/i2c/i2c-core.c > +++ b/drivers/i2c/i2c-core.c > @@ -1452,7 +1452,7 @@ static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap, > > static void of_i2c_register_devices(struct i2c_adapter *adap) > { > - struct device_node *node; > + struct device_node *bus, *node; > > /* Only register child devices if the adapter has a node pointer set */ > if (!adap->dev.of_node) > @@ -1460,11 +1460,18 @@ static void of_i2c_register_devices(struct i2c_adapter *adap) > > dev_dbg(&adap->dev, "of_i2c: walking child nodes\n"); > > - for_each_available_child_of_node(adap->dev.of_node, node) { > + bus = of_get_child_by_name(adap->dev.of_node, "i2c-bus"); > + if (!bus) > + bus = adap->dev.of_node; Maybe bus = of_node_get(adap->dev.of_node); here... > + > + for_each_available_child_of_node(bus, node) { > if (of_node_test_and_set_flag(node, OF_POPULATED)) > continue; > of_i2c_register_device(adap, node); > } > + > + if (bus != adap->dev.of_node) > + of_node_put(bus); ... and drop the extra check here? Thierry
On 17/06/16 17:24, Thierry Reding wrote: > * PGP Signed by an unknown key > > On Fri, Jun 17, 2016 at 01:03:42PM +0100, Jon Hunter wrote: >> If the 'i2c-bus' device-tree node is present for an I2C adapter then >> parse this subnode for I2C slaves. >> >> Signed-off-by: Jon Hunter <jonathanh@nvidia.com> >> --- >> drivers/i2c/i2c-core.c | 11 +++++++++-- >> 1 file changed, 9 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c >> index 952d2f0c02c5..f552d97bad32 100644 >> --- a/drivers/i2c/i2c-core.c >> +++ b/drivers/i2c/i2c-core.c >> @@ -1452,7 +1452,7 @@ static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap, >> >> static void of_i2c_register_devices(struct i2c_adapter *adap) >> { >> - struct device_node *node; >> + struct device_node *bus, *node; >> >> /* Only register child devices if the adapter has a node pointer set */ >> if (!adap->dev.of_node) >> @@ -1460,11 +1460,18 @@ static void of_i2c_register_devices(struct i2c_adapter *adap) >> >> dev_dbg(&adap->dev, "of_i2c: walking child nodes\n"); >> >> - for_each_available_child_of_node(adap->dev.of_node, node) { >> + bus = of_get_child_by_name(adap->dev.of_node, "i2c-bus"); >> + if (!bus) >> + bus = adap->dev.of_node; > > Maybe > bus = of_node_get(adap->dev.of_node); > > here... > >> + >> + for_each_available_child_of_node(bus, node) { >> if (of_node_test_and_set_flag(node, OF_POPULATED)) >> continue; >> of_i2c_register_device(adap, node); >> } >> + >> + if (bus != adap->dev.of_node) >> + of_node_put(bus); > > ... and drop the extra check here? Yes makes sense. Jon
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 952d2f0c02c5..f552d97bad32 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1452,7 +1452,7 @@ static struct i2c_client *of_i2c_register_device(struct i2c_adapter *adap, static void of_i2c_register_devices(struct i2c_adapter *adap) { - struct device_node *node; + struct device_node *bus, *node; /* Only register child devices if the adapter has a node pointer set */ if (!adap->dev.of_node) @@ -1460,11 +1460,18 @@ static void of_i2c_register_devices(struct i2c_adapter *adap) dev_dbg(&adap->dev, "of_i2c: walking child nodes\n"); - for_each_available_child_of_node(adap->dev.of_node, node) { + bus = of_get_child_by_name(adap->dev.of_node, "i2c-bus"); + if (!bus) + bus = adap->dev.of_node; + + for_each_available_child_of_node(bus, node) { if (of_node_test_and_set_flag(node, OF_POPULATED)) continue; of_i2c_register_device(adap, node); } + + if (bus != adap->dev.of_node) + of_node_put(bus); } static int of_dev_node_match(struct device *dev, void *data)
If the 'i2c-bus' device-tree node is present for an I2C adapter then parse this subnode for I2C slaves. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> --- drivers/i2c/i2c-core.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-)