diff options
| author | Kangjie Lu <kjlu@umn.edu> | 2019-03-14 00:24:02 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-08 07:19:08 +0200 |
| commit | 72bbf78c4dfcfdb9b7e3efed7e5abe426697e171 (patch) | |
| tree | 947fac9cf14d0979fe9cfb2234d19031888f2241 /drivers/hid | |
| parent | 87b622f949e4cfe8bc6aa0db724aeef71784f7a6 (diff) | |
HID: logitech: check the return value of create_singlethread_workqueue
[ Upstream commit 6c44b15e1c9076d925d5236ddadf1318b0a25ce2 ]
create_singlethread_workqueue may fail and return NULL. The fix checks if it is
NULL to avoid NULL pointer dereference. Also, the fix moves the call of
create_singlethread_workqueue earlier to avoid resource-release issues.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
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-logitech-hidpp.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 2e2515a4c070..3198faf5cff4 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -1282,6 +1282,13 @@ static int hidpp_ff_init(struct hidpp_device *hidpp, u8 feature_index) kfree(data); return -ENOMEM; } + data->wq = create_singlethread_workqueue("hidpp-ff-sendqueue"); + if (!data->wq) { + kfree(data->effect_ids); + kfree(data); + return -ENOMEM; + } + data->hidpp = hidpp; data->feature_index = feature_index; data->version = version; @@ -1326,7 +1333,6 @@ static int hidpp_ff_init(struct hidpp_device *hidpp, u8 feature_index) /* ignore boost value at response.fap.params[2] */ /* init the hardware command queue */ - data->wq = create_singlethread_workqueue("hidpp-ff-sendqueue"); atomic_set(&data->workqueue_size, 0); /* initialize with zero autocenter to get wheel in usable state */ |