diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-24 12:46:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-24 12:46:24 -0700 |
| commit | bdaf12b41235b0c59949914de022341e77907461 (patch) | |
| tree | 2473bf0e3a28fdc2285cf830c9a259d9b85a4061 /include | |
| parent | 7c024e9534f9edd8d052380a1b40d376c8feb11b (diff) | |
| parent | bf5d95c82692ead9ba7876af73dac2edcc8a6191 (diff) | |
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c-viapro: Don't log nacks
i2c/pca954x: Remove __devinit and __devexit from probe and remove functions
MAINTAINERS: Add maintainer for PCA9541 I2C bus master selector driver
i2c/mux: Driver for PCA9541 I2C Master Selector
i2c: Optimize function i2c_detect()
i2c: Discard warning message on device instantiation from user-space
i2c-amd8111: Add proper error handling
i2c: Change to new flag variable
i2c: Remove unneeded inclusions of <linux/i2c-id.h>
i2c: Let i2c_parent_is_i2c_adapter return the parent adapter
i2c: Simplify i2c_parent_is_i2c_adapter
i2c-pca-platform: Change device name of request_irq
i2c: Fix Kconfig dependencies
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/i2c.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 4bae0b72ed3c..1f66fa06a97c 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -384,11 +384,15 @@ static inline void i2c_set_adapdata(struct i2c_adapter *dev, void *data) dev_set_drvdata(&dev->dev, data); } -static inline int i2c_parent_is_i2c_adapter(const struct i2c_adapter *adapter) +static inline struct i2c_adapter * +i2c_parent_is_i2c_adapter(const struct i2c_adapter *adapter) { - return adapter->dev.parent != NULL - && adapter->dev.parent->bus == &i2c_bus_type - && adapter->dev.parent->type == &i2c_adapter_type; + struct device *parent = adapter->dev.parent; + + if (parent != NULL && parent->type == &i2c_adapter_type) + return to_i2c_adapter(parent); + else + return NULL; } /* Adapter locking functions, exported for shared pin cases */ |