Messages in this thread Patch in this message | | | Date | Fri, 22 Sep 2006 11:36:50 +0200 | From | Cornelia Huck <> | Subject | [1/9] driver core fixes: make_class_name() retval check |
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From: Cornelia Huck <cornelia.huck@de.ibm.com>
Make make_class_name() return NULL on error and fixup callers in the driver core.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
--- drivers/base/class.c | 12 ++++++++---- drivers/base/core.c | 7 +++++-- 2 files changed, 13 insertions(+), 6 deletions(-)
--- linux-2.6-CH.orig/drivers/base/class.c +++ linux-2.6-CH/drivers/base/class.c @@ -362,7 +362,7 @@ char *make_class_name(const char *name, class_name = kmalloc(size, GFP_KERNEL); if (!class_name) - return ERR_PTR(-ENOMEM); + return NULL; strcpy(class_name, name); strcat(class_name, ":"); @@ -409,8 +409,11 @@ static int make_deprecated_class_device_ return 0; class_name = make_class_name(class_dev->class->name, &class_dev->kobj); - error = sysfs_create_link(&class_dev->dev->kobj, &class_dev->kobj, - class_name); + if (!class_name) + error = sysfs_create_link(&class_dev->dev->kobj, + &class_dev->kobj, class_name); + else + error = -ENOMEM; kfree(class_name); return error; } @@ -771,7 +774,8 @@ void class_device_del(struct class_devic #ifdef CONFIG_SYSFS_DEPRECATED class_name = make_class_name(class_dev->class->name, &class_dev->kobj); - sysfs_remove_link(&class_dev->dev->kobj, class_name); + if (class_name) + sysfs_remove_link(&class_dev->dev->kobj, class_name); #endif sysfs_remove_link(&class_dev->kobj, "device"); } --- linux-2.6-CH.orig/drivers/base/core.c +++ linux-2.6-CH/drivers/base/core.c @@ -469,7 +469,9 @@ int device_add(struct device *dev) if (parent) { sysfs_create_link(&dev->kobj, &dev->parent->kobj, "device"); class_name = make_class_name(dev->class->name, &dev->kobj); - sysfs_create_link(&dev->parent->kobj, &dev->kobj, class_name); + if (class_name) + sysfs_create_link(&dev->parent->kobj, + &dev->kobj, class_name); } #endif } @@ -600,7 +602,8 @@ void device_del(struct device * dev) char *class_name = NULL; class_name = make_class_name(dev->class->name, &dev->kobj); - sysfs_remove_link(&dev->parent->kobj, class_name); + if (class_name) + sysfs_remove_link(&dev->parent->kobj, class_name); kfree(class_name); #endif sysfs_remove_link(&dev->kobj, "device"); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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