Re: [PATCH] Add modalias to macio sysfs attributes
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2005-10-10 22:21:04
On Mon, 2005-10-10 at 22:07 +0200, Olaf Hering wrote:
Provide a "compatible" entry in /sys/bus/macio/devices/*/ This can be used to load drivers via the modules.alias file. Author: [off-list ref] Signed-off-by: Olaf Hering <redacted>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
quoted hunk ↗ jump to hunk
--- linux-2.6.13-rc7/drivers/macintosh/macio_sysfs.c.~1~ 2005-08-26 16:32:13.000000000 +0200 +++ linux-2.6.13-rc7/drivers/macintosh/macio_sysfs.c 2005-08-27 11:58:47.000000000 +0200@@ -39,6 +39,31 @@ compatible_show (struct device *dev, str 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 };