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author | Miaoqian Lin <linmq006@gmail.com> | 2022-04-16 07:37:21 +0000 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-14 16:59:20 +0200 |
commit | c92ec22a991778a096342cf1a917ae36c5c86a90 (patch) | |
tree | 15330bd593b4a6e7c0ab539e4a3c39d4f0ad5442 /drivers/hid | |
parent | 9d458cca0360fa86479348dee6a631f422027fd4 (diff) | |
download | linux-stable-c92ec22a991778a096342cf1a917ae36c5c86a90.tar.gz linux-stable-c92ec22a991778a096342cf1a917ae36c5c86a90.tar.bz2 linux-stable-c92ec22a991778a096342cf1a917ae36c5c86a90.zip |
HID: elan: Fix potential double free in elan_input_configured
[ Upstream commit 1af20714fedad238362571620be0bd690ded05b6 ]
'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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/hid')
-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 7139227edb28..63077fb23026 100644 --- a/drivers/hid/hid-elan.c +++ b/drivers/hid/hid-elan.c @@ -192,7 +192,6 @@ 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; } @@ -204,7 +203,6 @@ 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; } |