[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>
diff --git a/drivers/macintosh/macio_sysfs.c b/drivers/macintosh/macio_sysfs.c
index 97d22bb..7f7d4ea 100644
--- a/drivers/macintosh/macio_sysfs.c
+++ b/drivers/macintosh/macio_sysfs.c
@@ -39,6 +39,31 @@
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 @@
__ATTR_RO(name),
__ATTR_RO(type),
__ATTR_RO(compatible),
+ __ATTR_RO(modalias),
__ATTR_NULL
};