Hi Allen,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[cannot apply to v5.3 next-20190917]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Allen-Pais/iwlwifi-fix-a-potential-NULL-pointer-dereference/20190919-021453
config: mips-allmodconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 7.4.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>

All warnings (new ones prefixed by >>):

   drivers/net/wireless/intel/iwlwifi/pcie/trans.c: In function 
'iwl_trans_pcie_alloc':
>> drivers/net/wireless/intel/iwlwifi/pcie/trans.c:3659:10: warning: return 
>> makes pointer from integer without a cast [-Wint-conversion]
      return -ENOMEM;
             ^

vim +3659 drivers/net/wireless/intel/iwlwifi/pcie/trans.c

  3625  
  3626          iwl_pcie_set_interrupt_capa(pdev, trans);
  3627          trans->hw_id = (pdev->device << 16) + pdev->subsystem_device;
  3628          snprintf(trans->hw_id_str, sizeof(trans->hw_id_str),
  3629                   "PCI ID: 0x%04X:0x%04X", pdev->device, 
pdev->subsystem_device);
  3630  
  3631          /* Initialize the wait queue for commands */
  3632          init_waitqueue_head(&trans_pcie->wait_command_queue);
  3633  
  3634          init_waitqueue_head(&trans_pcie->d0i3_waitq);
  3635  
  3636          if (trans_pcie->msix_enabled) {
  3637                  ret = iwl_pcie_init_msix_handler(pdev, trans_pcie);
  3638                  if (ret)
  3639                          goto out_no_pci;
  3640           } else {
  3641                  ret = iwl_pcie_alloc_ict(trans);
  3642                  if (ret)
  3643                          goto out_no_pci;
  3644  
  3645                  ret = devm_request_threaded_irq(&pdev->dev, pdev->irq,
  3646                                                  iwl_pcie_isr,
  3647                                                  iwl_pcie_irq_handler,
  3648                                                  IRQF_SHARED, DRV_NAME, 
trans);
  3649                  if (ret) {
  3650                          IWL_ERR(trans, "Error allocating IRQ %d\n", 
pdev->irq);
  3651                          goto out_free_ict;
  3652                  }
  3653                  trans_pcie->inta_mask = CSR_INI_SET_MASK;
  3654           }
  3655  
  3656          trans_pcie->rba.alloc_wq = alloc_workqueue("rb_allocator",
  3657                                                     WQ_HIGHPRI | 
WQ_UNBOUND, 1);
  3658          if (unlikely(!trans_pcie->rba.alloc_wq)) {
> 3659                  return -ENOMEM;
  3660                  goto out_free_ict;
  3661          }
  3662  
  3663          INIT_WORK(&trans_pcie->rba.rx_alloc, 
iwl_pcie_rx_allocator_work);
  3664  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
Description: application/gzip

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