[PATCH] w1: Adds a default family so that new slave families will show up in sysfs.
Adds a default family so that new slave families will show up in sysfs.
Signed-off-by: Ben Gardner <[email protected]>
Signed-off-by: Evgeniy Polyakov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
commit 99c5bfe993af1af37ddd615e72207dc7220dc526
tree 922369315ceb918b8c4a8a8749a5547497033874
parent 2a9d0c178158da4a9bcf22311a414c26a8102d13
author Evgeniy Polyakov <[email protected]> Sat, 04 Jun 2005 01:31:26 +0400
committer Greg Kroah-Hartman <[email protected]> Tue, 21 Jun 2005 21:43:11 -0700
drivers/w1/w1.c | 39 +++++++++++++++++++++++++++------------
1 files changed, 27 insertions(+), 12 deletions(-)
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -59,6 +59,19 @@ static pid_t control_thread;
static int control_needs_exit;
static DECLARE_COMPLETION(w1_control_complete);
+/* stuff for the default family */
+static ssize_t w1_famdefault_read_name(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+ return(sprintf(buf, "%s\n", sl->name));
+}
+static struct w1_family_ops w1_default_fops = {
+ .rname = &w1_famdefault_read_name,
+};
+static struct w1_family w1_default_family = {
+ .fops = &w1_default_fops,
+};
+
static int w1_master_match(struct device *dev, struct device_driver *drv)
{
return 1;
@@ -360,14 +373,16 @@ static int __w1_attach_slave_device(stru
return err;
}
- err = sysfs_create_bin_file(&sl->dev.kobj, &sl->attr_bin);
- if (err < 0) {
- dev_err(&sl->dev,
- "sysfs file creation for [%s] failed. err=%d\n",
- sl->dev.bus_id, err);
- device_remove_file(&sl->dev, &sl->attr_name);
- device_unregister(&sl->dev);
- return err;
+ if ( sl->attr_bin.read ) {
+ err = sysfs_create_bin_file(&sl->dev.kobj, &sl->attr_bin);
+ if (err < 0) {
+ dev_err(&sl->dev,
+ "sysfs file creation for [%s] failed. err=%d\n",
+ sl->dev.bus_id, err);
+ device_remove_file(&sl->dev, &sl->attr_name);
+ device_unregister(&sl->dev);
+ return err;
+ }
}
list_add_tail(&sl->w1_slave_entry, &sl->master->slist);
@@ -403,12 +418,10 @@ static int w1_attach_slave_device(struct
spin_lock(&w1_flock);
f = w1_family_registered(rn->family);
if (!f) {
- spin_unlock(&w1_flock);
+ f= &w1_default_family;
dev_info(&dev->dev, "Family %x for %02x.%012llx.%02x is not registered.\n",
rn->family, rn->family,
(unsigned long long)rn->id, rn->crc);
- kfree(sl);
- return -ENODEV;
}
__w1_family_get(f);
spin_unlock(&w1_flock);
@@ -449,7 +462,9 @@ static void w1_slave_detach(struct w1_sl
flush_signals(current);
}
- sysfs_remove_bin_file (&sl->dev.kobj, &sl->attr_bin);
+ if ( sl->attr_bin.read ) {
+ sysfs_remove_bin_file (&sl->dev.kobj, &sl->attr_bin);
+ }
device_remove_file(&sl->dev, &sl->attr_name);
device_unregister(&sl->dev);
w1_family_put(sl->family);
-
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