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| author | Stuart Yoder <stuart.yoder@nxp.com> | 2016-06-23 00:40:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-27 03:14:03 +0300 |
| commit | 3d579c350842c7a46da2da76b3461f7cfa3f6df9 (patch) | |
| tree | fc595983a2ccc58b291ddfddd1d97e4ff0c1a7d0 | |
| parent | b3e6916d6edfdf12505efbfb4a019e8a96f2c674 (diff) | |
| download | linux-3d579c350842c7a46da2da76b3461f7cfa3f6df9.tar.xz | |
staging: fsl-mc: add support for the modalias sysfs attribute
In order to support uevent based module loading implement modalias support
for the fsl-mc bus driver. Aliases are based on vendor and object/device
id and are of the form "fsl-mc:vNdN".
Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/fsl-mc/bus/mc-bus.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/staging/fsl-mc/bus/mc-bus.c b/drivers/staging/fsl-mc/bus/mc-bus.c index 405364307561..d8776dd89675 100644 --- a/drivers/staging/fsl-mc/bus/mc-bus.c +++ b/drivers/staging/fsl-mc/bus/mc-bus.c @@ -82,10 +82,35 @@ static int fsl_mc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) return 0; } +static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fsl_mc_device *mc_dev = to_fsl_mc_device(dev); + + return sprintf(buf, "fsl-mc:v%08Xd%s\n", mc_dev->obj_desc.vendor, + mc_dev->obj_desc.type); +} +static DEVICE_ATTR_RO(modalias); + +static struct attribute *fsl_mc_dev_attrs[] = { + &dev_attr_modalias.attr, + NULL, +}; + +static const struct attribute_group fsl_mc_dev_group = { + .attrs = fsl_mc_dev_attrs, +}; + +static const struct attribute_group *fsl_mc_dev_groups[] = { + &fsl_mc_dev_group, + NULL, +}; + struct bus_type fsl_mc_bus_type = { .name = "fsl-mc", .match = fsl_mc_bus_match, .uevent = fsl_mc_bus_uevent, + .dev_groups = fsl_mc_dev_groups, }; EXPORT_SYMBOL_GPL(fsl_mc_bus_type); |