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| author | Miaoqian Lin <linmq006@gmail.com> | 2022-04-16 10:37:21 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2022-04-21 12:38:28 +0300 |
| commit | 1af20714fedad238362571620be0bd690ded05b6 (patch) | |
| tree | 614364f9b462e9ddb7607521108e15b71e74481b /drivers/hid/hid-elan.c | |
| parent | 116c3f4a78ebe478d5ad5a038baf931e93e7d748 (diff) | |
| download | linux-1af20714fedad238362571620be0bd690ded05b6.tar.xz | |
HID: elan: Fix potential double free in elan_input_configured
'input' is a managed resource allocated with devm_input_allocate_device(),
so there is no need to call input_free_device() explicitly or
there will be a double free.
According to the doc of devm_input_allocate_device():
* Managed input devices do not need to be explicitly unregistered or
* freed as it will be done automatically when owner device unbinds from
* its driver (or binding fails).
Fixes: b7429ea53d6c ("HID: elan: Fix memleak in elan_input_configured")
Fixes: 9a6a4193d65b ("HID: Add driver for USB ELAN Touchpad")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-elan.c')
| -rw-r--r-- | drivers/hid/hid-elan.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/hid/hid-elan.c b/drivers/hid/hid-elan.c index 3091355d48df..8e4a5528e25d 100644 --- a/drivers/hid/hid-elan.c +++ b/drivers/hid/hid-elan.c @@ -188,7 +188,6 @@ static int elan_input_configured(struct hid_device *hdev, struct hid_input *hi) ret = input_mt_init_slots(input, ELAN_MAX_FINGERS, INPUT_MT_POINTER); if (ret) { hid_err(hdev, "Failed to init elan MT slots: %d\n", ret); - input_free_device(input); return ret; } @@ -200,7 +199,6 @@ static int elan_input_configured(struct hid_device *hdev, struct hid_input *hi) hid_err(hdev, "Failed to register elan input device: %d\n", ret); input_mt_destroy_slots(input); - input_free_device(input); return ret; } |