diff options
| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2023-02-09 04:07:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-11 18:43:42 +0300 |
| commit | c002d2741400771171b68dde9af937a4dfa0d1b3 (patch) | |
| tree | e5cf7beee92eedf4a0e745b0fc2a3f0979acce6d /drivers | |
| parent | 7e594abc0424e4f8c2385f11aefeaadcfc507aa5 (diff) | |
| download | linux-c002d2741400771171b68dde9af937a4dfa0d1b3.tar.xz | |
wifi: iwl4965: Add missing check for create_singlethread_workqueue()
[ Upstream commit 26e6775f75517ad6844fe5b79bc5f3fa8c22ee61 ]
Add the check for the return value of the create_singlethread_workqueue()
in order to avoid NULL pointer dereference.
Fixes: b481de9ca074 ("[IWLWIFI]: add iwlwifi wireless drivers")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230209010748.45454-1-jiasheng@iscas.ac.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/intel/iwlegacy/4965-mac.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/net/wireless/intel/iwlegacy/4965-mac.c b/drivers/net/wireless/intel/iwlegacy/4965-mac.c index 5fe17039a337..feeb57cadc1c 100644 --- a/drivers/net/wireless/intel/iwlegacy/4965-mac.c +++ b/drivers/net/wireless/intel/iwlegacy/4965-mac.c @@ -6217,10 +6217,12 @@ out: mutex_unlock(&il->mutex); } -static void +static int il4965_setup_deferred_work(struct il_priv *il) { il->workqueue = create_singlethread_workqueue(DRV_NAME); + if (!il->workqueue) + return -ENOMEM; init_waitqueue_head(&il->wait_command_queue); @@ -6241,6 +6243,8 @@ il4965_setup_deferred_work(struct il_priv *il) tasklet_init(&il->irq_tasklet, il4965_irq_tasklet, (unsigned long)il); + + return 0; } static void @@ -6630,7 +6634,10 @@ il4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto out_disable_msi; } - il4965_setup_deferred_work(il); + err = il4965_setup_deferred_work(il); + if (err) + goto out_free_irq; + il4965_setup_handlers(il); /********************************************* @@ -6668,6 +6675,7 @@ il4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) out_destroy_workqueue: destroy_workqueue(il->workqueue); il->workqueue = NULL; +out_free_irq: free_irq(il->pci_dev->irq, il); out_disable_msi: pci_disable_msi(il->pci_dev); |