diff options
Diffstat (limited to 'drivers/i2c/i2c-core.c')
| -rw-r--r-- | drivers/i2c/i2c-core.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 96da22e9a5a..e186df65711 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -35,8 +35,8 @@ #include <linux/completion.h> #include <linux/hardirq.h> #include <linux/irqflags.h> +#include <linux/semaphore.h> #include <asm/uaccess.h> -#include <asm/semaphore.h> #include "i2c-core.h" @@ -90,12 +90,16 @@ static int i2c_device_probe(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct i2c_driver *driver = to_i2c_driver(dev->driver); + int status; if (!driver->probe) return -ENODEV; client->driver = driver; dev_dbg(dev, "probe\n"); - return driver->probe(client); + status = driver->probe(client); + if (status) + client->driver = NULL; + return status; } static int i2c_device_remove(struct device *dev) @@ -485,8 +489,8 @@ EXPORT_SYMBOL(i2c_add_adapter); * Context: can sleep * * This routine is used to declare an I2C adapter when its bus number - * matters. Example: for I2C adapters from system-on-chip CPUs, or - * otherwise built in to the system's mainboard, and where i2c_board_info + * matters. For example, use it for I2C adapters from system-on-chip CPUs, + * or otherwise built in to the system's mainboard, and where i2c_board_info * is used to properly configure I2C devices. * * If no devices have pre-been declared for this bus, then be sure to |