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authorJeff Mahoney <jeffm@suse.com>2005-07-06 15:26:27 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-06 12:55:20 -0700
commitb5bf5b6786ccfc9e0c8801291f463d92c8e0b423 (patch)
tree2b398307b9d647f8f8902093f66ec20348727567 /drivers/macintosh/macio_sysfs.c
parent5e6557722e69840506eb8bc5a1edcdb4e447a917 (diff)
downloadop-kernel-dev-b5bf5b6786ccfc9e0c8801291f463d92c8e0b423.zip
op-kernel-dev-b5bf5b6786ccfc9e0c8801291f463d92c8e0b423.tar.gz
[PATCH] openfirmware: add sysfs nodes for open firmware devices
This adds sysfs nodes that the hotplug userspace can use to load the appropriate modules. In order for hotplug to work with macio devices, patches to module-init-tools and hotplug must be applied. Those patches are available at: ftp://ftp.suse.com/pub/people/jeffm/linux/macio-hotplug/ Changes: The previous versions were built on 2.6.12. 2.6.13-rcX introduced a device_attribute parameter to the show functions. Since that parameter was treated as the output buffer, memory corruption would result, causing Oopsen very quickly. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/macintosh/macio_sysfs.c')
-rw-r--r--drivers/macintosh/macio_sysfs.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/macintosh/macio_sysfs.c b/drivers/macintosh/macio_sysfs.c
new file mode 100644
index 0000000..97d22bb
--- /dev/null
+++ b/drivers/macintosh/macio_sysfs.c
@@ -0,0 +1,50 @@
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/stat.h>
+#include <asm/macio.h>
+
+
+#define macio_config_of_attr(field, format_string) \
+static ssize_t \
+field##_show (struct device *dev, struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct macio_dev *mdev = to_macio_device (dev); \
+ return sprintf (buf, format_string, mdev->ofdev.node->field); \
+}
+
+static ssize_t
+compatible_show (struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct of_device *of;
+ char *compat;
+ int cplen;
+ int length = 0;
+
+ of = &to_macio_device (dev)->ofdev;
+ compat = (char *) get_property(of->node, "compatible", &cplen);
+ if (!compat) {
+ *buf = '\0';
+ return 0;
+ }
+ while (cplen > 0) {
+ int l;
+ length += sprintf (buf, "%s\n", 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");
+
+struct device_attribute macio_dev_attrs[] = {
+ __ATTR_RO(name),
+ __ATTR_RO(type),
+ __ATTR_RO(compatible),
+ __ATTR_NULL
+};
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