Re: [PATCH] wifi: ath11k: fix resource leak on error in ext IRQ setup

[kernel test robot <lkp@intel.com>]

Hi ZhaoJinming,

kernel test robot noticed the following build errors:

[auto build test ERROR on wireless/main]
[also build test ERROR on wireless-next/main linus/master v7.2-rc6]
[cannot apply to ath/ath-next next-20260805]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/ZhaoJinming/wifi-ath11k-fix-resource-leak-on-error-in-ext-IRQ-setup/20260805-214821
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless.git main
patch link:    https://lore.kernel.org/r/20260622025659.1235658-1-zhaojinming%40uniontech.com
patch subject: [PATCH] wifi: ath11k: fix resource leak on error in ext IRQ setup
config: alpha-allmodconfig (https://download.01.org/0day-ci/archive/20260806/202608060243.Pcqzgk1V-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260806/202608060243.Pcqzgk1V-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608060243.Pcqzgk1V-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/net/wireless/ath/ath11k/ahb.c: In function 'ath11k_ahb_config_ext_irq':
>> drivers/net/wireless/ath/ath11k/ahb.c:615:17: error: 'irq_grp' undeclared (first use in this function)
     615 |                 irq_grp = &ab->ext_irq_grp[i];
         |                 ^~~~~~~
   drivers/net/wireless/ath/ath11k/ahb.c:615:17: note: each undeclared identifier is reported only once for each function it appears in


vim +/irq_grp +615 drivers/net/wireless/ath/ath11k/ahb.c

   523	
   524	static int ath11k_ahb_config_ext_irq(struct ath11k_base *ab)
   525	{
   526		struct ath11k_hw_params *hw = &ab->hw_params;
   527		int i, j;
   528		int irq;
   529		int ret;
   530	
   531		for (i = 0; i < ATH11K_EXT_IRQ_GRP_NUM_MAX; i++) {
   532			struct ath11k_ext_irq_grp *irq_grp = &ab->ext_irq_grp[i];
   533			u32 num_irq = 0;
   534	
   535			irq_grp->ab = ab;
   536			irq_grp->grp_id = i;
   537	
   538			irq_grp->napi_ndev = alloc_netdev_dummy(0);
   539			if (!irq_grp->napi_ndev) {
   540				irq_grp->num_irq = 0;
   541				goto err_request_irq;
   542			}
   543	
   544			netif_napi_add(irq_grp->napi_ndev, &irq_grp->napi,
   545				       ath11k_ahb_ext_grp_napi_poll);
   546	
   547			for (j = 0; j < ATH11K_EXT_IRQ_NUM_MAX; j++) {
   548				if (ab->hw_params.ring_mask->tx[i] & BIT(j)) {
   549					irq_grp->irqs[num_irq++] =
   550						wbm2host_tx_completions_ring1 - j;
   551				}
   552	
   553				if (ab->hw_params.ring_mask->rx[i] & BIT(j)) {
   554					irq_grp->irqs[num_irq++] =
   555						reo2host_destination_ring1 - j;
   556				}
   557	
   558				if (ab->hw_params.ring_mask->rx_err[i] & BIT(j))
   559					irq_grp->irqs[num_irq++] = reo2host_exception;
   560	
   561				if (ab->hw_params.ring_mask->rx_wbm_rel[i] & BIT(j))
   562					irq_grp->irqs[num_irq++] = wbm2host_rx_release;
   563	
   564				if (ab->hw_params.ring_mask->reo_status[i] & BIT(j))
   565					irq_grp->irqs[num_irq++] = reo2host_status;
   566	
   567				if (j < ab->hw_params.max_radios) {
   568					if (ab->hw_params.ring_mask->rxdma2host[i] & BIT(j)) {
   569						irq_grp->irqs[num_irq++] =
   570							rxdma2host_destination_ring_mac1 -
   571							ath11k_hw_get_mac_from_pdev_id(hw, j);
   572					}
   573	
   574					if (ab->hw_params.ring_mask->host2rxdma[i] & BIT(j)) {
   575						irq_grp->irqs[num_irq++] =
   576							host2rxdma_host_buf_ring_mac1 -
   577							ath11k_hw_get_mac_from_pdev_id(hw, j);
   578					}
   579	
   580					if (ab->hw_params.ring_mask->rx_mon_status[i] & BIT(j)) {
   581						irq_grp->irqs[num_irq++] =
   582							ppdu_end_interrupts_mac1 -
   583							ath11k_hw_get_mac_from_pdev_id(hw, j);
   584						irq_grp->irqs[num_irq++] =
   585							rxdma2host_monitor_status_ring_mac1 -
   586							ath11k_hw_get_mac_from_pdev_id(hw, j);
   587					}
   588				}
   589			}
   590			irq_grp->num_irq = num_irq;
   591	
   592			for (j = 0; j < irq_grp->num_irq; j++) {
   593				int irq_idx = irq_grp->irqs[j];
   594	
   595				irq = platform_get_irq_byname(ab->pdev,
   596							      irq_name[irq_idx]);
   597				ab->irq_num[irq_idx] = irq;
   598				irq_set_status_flags(irq, IRQ_NOAUTOEN | IRQ_DISABLE_UNLAZY);
   599				ret = request_irq(irq, ath11k_ahb_ext_interrupt_handler,
   600						  IRQF_TRIGGER_RISING,
   601						  irq_name[irq_idx], irq_grp);
   602				if (ret) {
   603					ath11k_err(ab, "failed request_irq for %d\n",
   604						   irq);
   605					irq_grp->num_irq = j;
   606					goto err_request_irq;
   607				}
   608			}
   609		}
   610	
   611		return 0;
   612	
   613	err_request_irq:
   614		for ( ; i >= 0; i--) {
 > 615			irq_grp = &ab->ext_irq_grp[i];
   616			for (j = irq_grp->num_irq - 1; j >= 0; j--)
   617				free_irq(ab->irq_num[irq_grp->irqs[j]], irq_grp);
   618			if (irq_grp->napi_ndev) {
   619				netif_napi_del(&irq_grp->napi);
   620				free_netdev(irq_grp->napi_ndev);
   621			}
   622		}
   623		return ret;
   624	}
   625	

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