The patch titled
driver core: fix built-in drivers sysfs links
has been removed from the -mm tree. Its filename was
driver-core-fix-built-in-drivers-sysfs-links.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: driver core: fix built-in drivers sysfs links
From: Kay Sievers <kay.sievers@xxxxxxxx>
built-in drivers had broken sysfs links that caused bootup hangs for
certain driver unregistry sequences.
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Acked-by: Kay Sievers <kay.sievers@xxxxxxxx>
Signed-off-by: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/device.h | 1 +
kernel/module.c | 18 ++++++++++++++----
2 files changed, 15 insertions(+), 4 deletions(-)
diff -puN include/linux/device.h~driver-core-fix-built-in-drivers-sysfs-links include/linux/device.h
--- a/include/linux/device.h~driver-core-fix-built-in-drivers-sysfs-links
+++ a/include/linux/device.h
@@ -128,6 +128,7 @@ struct device_driver {
struct module * owner;
const char * mod_name; /* used for built-in modules */
+ struct module_kobject * mkobj;
int (*probe) (struct device * dev);
int (*remove) (struct device * dev);
diff -puN kernel/module.c~driver-core-fix-built-in-drivers-sysfs-links kernel/module.c
--- a/kernel/module.c~driver-core-fix-built-in-drivers-sysfs-links
+++ a/kernel/module.c
@@ -2384,8 +2384,13 @@ void module_add_driver(struct module *mo
/* Lookup built-in module entry in /sys/modules */
mkobj = kset_find_obj(&module_subsys.kset, drv->mod_name);
- if (mkobj)
+ if (mkobj) {
mk = container_of(mkobj, struct module_kobject, kobj);
+ /* remember our module structure */
+ drv->mkobj = mk;
+ /* kset_find_obj took a reference */
+ kobject_put(mkobj);
+ }
}
if (!mk)
@@ -2405,17 +2410,22 @@ EXPORT_SYMBOL(module_add_driver);
void module_remove_driver(struct device_driver *drv)
{
+ struct module_kobject *mk = NULL;
char *driver_name;
if (!drv)
return;
sysfs_remove_link(&drv->kobj, "module");
- if (drv->owner && drv->owner->mkobj.drivers_dir) {
+
+ if (drv->owner)
+ mk = &drv->owner->mkobj;
+ else if (drv->mkobj)
+ mk = drv->mkobj;
+ if (mk && mk->drivers_dir) {
driver_name = make_driver_name(drv);
if (driver_name) {
- sysfs_remove_link(drv->owner->mkobj.drivers_dir,
- driver_name);
+ sysfs_remove_link(mk->drivers_dir, driver_name);
kfree(driver_name);
}
}
_
Patches currently in -mm which might be from kay.sievers@xxxxxxxx are
origin.patch
driver-core-suppress-uevents-via-filter.patch
driver-core-switch-firmware_class-to.patch
s390-cio-delay-uevents-for-subchannels.patch
uevent-use-add_uevent_var-instead-of-open-coding-it.patch
-
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