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rapidio: add udev notification

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Add RapidIO-specific modalias generation to enable udev notifications
about RapidIO-specific events.

The RapidIO modalias string format is shown below:

"rapidio:vNNNNdNNNNavNNNNadNNNN"

Where:
v  - Device Vendor ID (16 bit),
d  - Device ID (16 bit),
av - Assembly Vendor ID (16 bit),
ad - Assembly ID (16 bit),

as they are reported in corresponding Capability Registers (CARs)
of each RapidIO device.

Signed-off-by: Alexandre Bounine <[email protected]>
Cc: Matt Porter <[email protected]>
Cc: Li Yang <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Andre van Herk <[email protected]>
Cc: Micha Nelissen <[email protected]>
Cc: Stef van Os <[email protected]>
Cc: Jean Delvare <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Alexandre Bounine 2013-07-03 15:08:58 -07:00 • committed by Linus Torvalds
commit 3bdbb62fe9
7 changed files with 74 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

18
drivers/rapidio/rio-driver.c
View file

@ -199,6 +199,23 @@ static int rio_match_bus(struct device *dev, struct device_driver *drv)
out:return 0;
}
static int rio_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct rio_dev *rdev;
if (!dev)
return -ENODEV;
rdev = to_rio_dev(dev);
if (!rdev)
return -ENODEV;
if (add_uevent_var(env, "MODALIAS=rapidio:v%04Xd%04Xav%04Xad%04X",
rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did))
return -ENOMEM;
return 0;
}
struct device rio_bus = {
.init_name = "rapidio",
};
@ -210,6 +227,7 @@ struct bus_type rio_bus_type = {
.bus_attrs = rio_bus_attrs,
.probe = rio_device_probe,
.remove = rio_device_remove,
.uevent = rio_uevent,
};
/**

10
drivers/rapidio/rio-sysfs.c
View file

@ -84,6 +84,15 @@ static ssize_t lnext_show(struct device *dev,
return str - buf;
}
static ssize_t modalias_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct rio_dev *rdev = to_rio_dev(dev);
return sprintf(buf, "rapidio:v%04Xd%04Xav%04Xad%04X\n",
rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did);
}
struct device_attribute rio_dev_attrs[] = {
__ATTR_RO(did),
__ATTR_RO(vid),
@ -93,6 +102,7 @@ struct device_attribute rio_dev_attrs[] = {
__ATTR_RO(asm_rev),
__ATTR_RO(lprev),
__ATTR_RO(destid),
__ATTR_RO(modalias),
__ATTR_NULL,
};