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authorscwhab@suse.de <scwhab@suse.de>2005-10-28 17:46:20 -0700
committerPaul Mackerras <paulus@samba.org>2005-10-29 14:35:58 +1000
commitdcb34abb4d9bae0588c5c11101ed6afcee71f895 (patch)
tree41e79b5d302ddb08745e93891a6dd4e4a00c208a /drivers/macintosh
parent35e95e63995f3e52178db4b769120ce60deb6b54 (diff)
[PATCH] Add modalias to macio sysfs attributes
Provide a "compatible" entry in /sys/bus/macio/devices/*/ This can be used to load drivers via the modules.alias file. Signed-off-by: Olaf Hering <olh@suse.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/macio_sysfs.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/macintosh/macio_sysfs.c b/drivers/macintosh/macio_sysfs.c
index 97d22bb4516..7f7d4eaca87 100644
--- a/drivers/macintosh/macio_sysfs.c
+++ b/drivers/macintosh/macio_sysfs.c
@@ -39,6 +39,31 @@ compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
return length;
}
+static ssize_t modalias_show (struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct of_device *of;
+ char *compat;
+ int cplen;
+ int length;
+
+ of = &to_macio_device (dev)->ofdev;
+ compat = (char *) get_property (of->node, "compatible", &cplen);
+ if (!compat) compat = "", cplen = 1;
+ length = sprintf (buf, "of:N%sT%s", of->node->name, of->node->type);
+ buf += length;
+ while (cplen > 0) {
+ int l;
+ length += sprintf (buf, "C%s", compat);
+ buf += length;
+ l = strlen (compat) + 1;
+ compat += l;
+ cplen -= l;
+ }
+
+ return length;
+}
+
macio_config_of_attr (name, "%s\n");
macio_config_of_attr (type, "%s\n");
@@ -46,5 +71,6 @@ struct device_attribute macio_dev_attrs[] = {
__ATTR_RO(name),
__ATTR_RO(type),
__ATTR_RO(compatible),
+ __ATTR_RO(modalias),
__ATTR_NULL
};