diff options
| author | Lee Jones <lee.jones@linaro.org> | 2016-11-07 12:47:39 +0000 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2016-11-17 16:10:21 +0100 |
| commit | da10c06a044b3752f9162a88b7d26ed2409c5314 (patch) | |
| tree | 9ea026e319d79e7d0671cdbb50961a3c5e411966 /drivers/i2c/i2c-core.c | |
| parent | 298d4de1ed003ad91cb49e068d744db0343cacb6 (diff) | |
| download | linux-da10c06a044b3752f9162a88b7d26ed2409c5314.tar.bz2 | |
i2c: Make I2C ID tables non-mandatory for DT'ed devices
Currently the I2C framework insists on devices supplying an I2C ID
table. Many of the devices which do so unnecessarily adding quite a
few wasted lines to kernel code. This patch allows drivers a means
to 'not' supply the aforementioned table and match on DT match tables
instead.
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Tested-by: Kieran Bingham <kieran@bingham.xyz>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Kieran Bingham <kieran@bingham.xyz>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/i2c-core.c')
| -rw-r--r-- | drivers/i2c/i2c-core.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 2151d0b353b3..a97f7a0b0d6e 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -697,7 +697,7 @@ static int i2c_device_match(struct device *dev, struct device_driver *drv) /* Attempt an OF style match */ - if (of_driver_match_device(dev, drv)) + if (i2c_of_match_device(drv->of_match_table, client)) return 1; /* Then ACPI style match */ @@ -923,7 +923,15 @@ static int i2c_device_probe(struct device *dev) } driver = to_i2c_driver(dev->driver); - if (!driver->probe || !driver->id_table) + if (!driver->probe) + return -EINVAL; + + /* + * An I2C ID table is not mandatory, if and only if, a suitable Device + * Tree match table entry is supplied for the probing device. + */ + if (!driver->id_table && + !i2c_of_match_device(dev->driver->of_match_table, client)) return -ENODEV; if (client->flags & I2C_CLIENT_WAKE) { |