The function 'kobject_add' tries to verify the name of
a new kobject instance is properly set before continuing.
if (!kobj->k_name)
kobj->k_name = kobj->name;
if (!kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
The statement:
if (!kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
is useless the way it is right now, because it can never be true. I
think the
code was intended to be:
if (!kobj->k_name)
kobj->k_name = kobj->name;
if (!*kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
because this would make sure the kobj->name buffer has something in it.
So the missing '*' is just a typo. Although, I would much prefer
expression like:
if (*kobj->k_name == '\0') {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
because this would've made the intention clear, in this patch
I just restore the missing '*' without changing the coding style of
the function.
It looks like thunderbird client replaces the tabs with spaces even if I say
'paste without formatting'. Don't know how to insert the patch intact in
the
body of the message. Attaching the patch.
Signed-off-by: Martin Stoilov <[email protected]>
---
diff -pNru linux-2.6.20-rc2/lib/kobject.c linux-2.6.20-rc2.mod/lib/kobject.c
--- linux-2.6.20-rc2/lib/kobject.c 2006-12-29 11:48:30.000000000 -0800
+++ linux-2.6.20-rc2.mod/lib/kobject.c 2006-12-29 11:50:42.000000000 -0800
@@ -167,7 +167,7 @@ int kobject_add(struct kobject * kobj)
return -ENOENT;
if (!kobj->k_name)
kobj->k_name = kobj->name;
- if (!kobj->k_name) {
+ if (!*kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
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