From: Olaf Hering <olaf@aepfle.de>
To: linuxppc-dev@ozlabs.org
Subject: [PATCH] create modalias file in sysfs for bus of_platform
Date: Tue, 22 Jan 2008 15:21:09 +0100 [thread overview]
Message-ID: <20080122142109.GA12967@aepfle.de> (raw)
Create /sys/bus/of_platform/devices/*/modalias file to allow autoloading
of modules. modalias files are already present for many other bus types.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
drivers/of/device.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -86,7 +86,19 @@ static ssize_t dev_show_devspec(struct d
return sprintf(buf, "%s", ofdev->node->full_name);
}
+static ssize_t dev_show_modalias(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct of_device *ofdev = to_of_device(dev);
+ ssize_t len = 0;
+
+ if (ofdev)
+ len = of_device_get_modalias(ofdev, buf, PAGE_SIZE);
+ return len;
+}
+
static DEVICE_ATTR(devspec, S_IRUGO, dev_show_devspec, NULL);
+static DEVICE_ATTR(modalias, S_IRUGO, dev_show_modalias, NULL);
/**
* of_release_dev - free an of device structure when all users of it are finished.
@@ -116,6 +128,11 @@ int of_device_register(struct of_device
return rc;
rc = device_create_file(&ofdev->dev, &dev_attr_devspec);
+ if (rc) {
+ device_unregister(&ofdev->dev);
+ return rc;
+ }
+ rc = device_create_file(&ofdev->dev, &dev_attr_modalias);
if (rc)
device_unregister(&ofdev->dev);
@@ -126,6 +143,7 @@ EXPORT_SYMBOL(of_device_register);
void of_device_unregister(struct of_device *ofdev)
{
device_remove_file(&ofdev->dev, &dev_attr_devspec);
+ device_remove_file(&ofdev->dev, &dev_attr_modalias);
device_unregister(&ofdev->dev);
}
EXPORT_SYMBOL(of_device_unregister);
next reply other threads:[~2008-01-22 14:20 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-22 14:21 Olaf Hering [this message]
2008-01-22 14:40 ` [PATCH v2] create modalias file in sysfs for bus of_platform Olaf Hering
2008-01-22 14:58 ` Stephen Rothwell
2008-01-22 19:09 ` [PATCH v3] " Olaf Hering
2008-01-22 23:03 ` Stephen Rothwell
2008-01-26 0:23 ` Paul Mackerras
2008-01-26 10:04 ` [PATCH v4] " Olaf Hering
2008-04-24 13:16 ` [PATCH v5] " Olaf Hering
2008-05-08 21:31 ` Olaf Hering
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