In version 1, I forgot to modify the same bug in the first loop.
we have to call kobject_put() to clean up the kobject after function
kobject_init(), kobject_add(), or kobject_uevent() is called.
Signed-off-by: Cong Ding <ding...@gmail.com>
---
drivers/uio/uio.c | 16 ++++++++++------
1 files changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 5110f36..79774d3 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -291,10 +291,10 @@ static int uio_dev_add_attributes(struct uio_device *idev)
mem->map = map;
ret = kobject_add(&map->kobj, idev->map_dir, "map%d", mi);
if (ret)
- goto err_map;
+ goto err_map_kobj;
ret = kobject_uevent(&map->kobj, KOBJ_ADD);
if (ret)
- goto err_map;
+ goto err_map_kobj;
}
for (pi = 0; pi < MAX_UIO_PORT_REGIONS; pi++) {
@@ -317,23 +317,27 @@ static int uio_dev_add_attributes(struct uio_device *idev)
ret = kobject_add(&portio->kobj, idev->portio_dir,
"port%d", pi);
if (ret)
- goto err_portio;
+ goto err_portio_kobj;
ret = kobject_uevent(&portio->kobj, KOBJ_ADD);
if (ret)
- goto err_portio;
+ goto err_portio_kobj;
}
return 0;
err_portio:
- for (pi--; pi >= 0; pi--) {
+ pi--;
+err_portio_kobj:
+ for (; pi >= 0; pi--) {
port = &idev->info->port[pi];
portio = port->portio;
kobject_put(&portio->kobj);
}
kobject_put(idev->portio_dir);
err_map:
- for (mi--; mi>=0; mi--) {
+ mi--;
+err_map_kobj:
+ for (; mi >= 0; mi--) {
mem = &idev->info->mem[mi];
map = mem->map;
kobject_put(&map->kobj);
--
1.7.4.5
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