diff options
| author | Zhaolei <zhaolei@cn.fujitsu.com> | 2008-10-22 11:07:25 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-11-01 00:00:45 +0100 |
| commit | cfa3fa405a5eafd5d5c53b18abc00ca998c35eef (patch) | |
| tree | d2be111acfed0d9f563453eb205642d05c964f89 | |
| parent | Fix debugfs_create_bool's error checking method for wireless/iwlwifi/ (diff) | |
| download | linux-cfa3fa405a5eafd5d5c53b18abc00ca998c35eef.tar.xz linux-cfa3fa405a5eafd5d5c53b18abc00ca998c35eef.zip | |
Fix debugfs_create_*'s error checking method for wireless/rt2x00/
debugfs_create_*() returns NULL if an error occurs, returns -ENODEV
when debugfs is not enabled in the kernel.
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00debug.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00debug.c b/drivers/net/wireless/rt2x00/rt2x00debug.c index 96bc0a0336f0..a31418a700c1 100644 --- a/drivers/net/wireless/rt2x00/rt2x00debug.c +++ b/drivers/net/wireless/rt2x00/rt2x00debug.c @@ -587,29 +587,29 @@ void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) intf->driver_folder = debugfs_create_dir(intf->rt2x00dev->ops->name, rt2x00dev->hw->wiphy->debugfsdir); - if (IS_ERR(intf->driver_folder)) + if (IS_ERR(intf->driver_folder) || !intf->driver_folder) goto exit; intf->driver_entry = rt2x00debug_create_file_driver("driver", intf, &intf->driver_blob); - if (IS_ERR(intf->driver_entry)) + if (IS_ERR(intf->driver_entry) || !intf->driver_entry) goto exit; intf->chipset_entry = rt2x00debug_create_file_chipset("chipset", intf, &intf->chipset_blob); - if (IS_ERR(intf->chipset_entry)) + if (IS_ERR(intf->chipset_entry) || !intf->chipset_entry) goto exit; intf->dev_flags = debugfs_create_file("dev_flags", S_IRUSR, intf->driver_folder, intf, &rt2x00debug_fop_dev_flags); - if (IS_ERR(intf->dev_flags)) + if (IS_ERR(intf->dev_flags) || !intf->dev_flags) goto exit; intf->register_folder = debugfs_create_dir("register", intf->driver_folder); - if (IS_ERR(intf->register_folder)) + if (IS_ERR(intf->register_folder) || !intf->register_folder) goto exit; #define RT2X00DEBUGFS_CREATE_REGISTER_ENTRY(__intf, __name) \ @@ -619,7 +619,8 @@ void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) S_IRUSR | S_IWUSR, \ (__intf)->register_folder, \ &(__intf)->offset_##__name); \ - if (IS_ERR((__intf)->__name##_off_entry)) \ + if (IS_ERR((__intf)->__name##_off_entry) \ + || !(__intf)->__name##_off_entry) \ goto exit; \ \ (__intf)->__name##_val_entry = \ @@ -627,7 +628,8 @@ void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) S_IRUSR | S_IWUSR, \ (__intf)->register_folder, \ (__intf), &rt2x00debug_fop_##__name);\ - if (IS_ERR((__intf)->__name##_val_entry)) \ + if (IS_ERR((__intf)->__name##_val_entry) \ + || !(__intf)->__name##_val_entry) \ goto exit; \ }) @@ -640,13 +642,14 @@ void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) intf->queue_folder = debugfs_create_dir("queue", intf->driver_folder); - if (IS_ERR(intf->queue_folder)) + if (IS_ERR(intf->queue_folder) || !intf->queue_folder) goto exit; intf->queue_frame_dump_entry = debugfs_create_file("dump", S_IRUSR, intf->queue_folder, intf, &rt2x00debug_fop_queue_dump); - if (IS_ERR(intf->queue_frame_dump_entry)) + if (IS_ERR(intf->queue_frame_dump_entry) + || !intf->queue_frame_dump_entry) goto exit; skb_queue_head_init(&intf->frame_dump_skbqueue); |