[PATCH 19/19] PCI: rockchip-ep: Handle PERST signal in endpoint mode

[kernel test robot]

Hi Damien,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus linus/master v6.9-rc1 next-20240328]
[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/Damien-Le-Moal/PCI-endpoint-Introduce-pci_epc_check_func/20240329-171158
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20240329090945.1097609-20-dlemoal%40kernel.org
patch subject: [PATCH 19/19] PCI: rockchip-ep: Handle PERST signal in endpoint mode
config: i386-buildonly-randconfig-005-20240330 (https://download.01.org/0day-ci/archive/20240330/202403301809.VzsJsDFL-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240330/202403301809.VzsJsDFL-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403301809.VzsJsDFL-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/pci/controller/pcie-rockchip-ep.c:633:2: error: call to undeclared function 'irq_set_irq_type'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     633 |         irq_set_irq_type(ep->perst_irq,
         |         ^
   drivers/pci/controller/pcie-rockchip-ep.c:633:2: note: did you mean 'irq_set_irq_wake'?
   include/linux/interrupt.h:482:12: note: 'irq_set_irq_wake' declared here
     482 | extern int irq_set_irq_wake(unsigned int irq, unsigned int on);
         |            ^
>> drivers/pci/controller/pcie-rockchip-ep.c:657:2: error: call to undeclared function 'irq_set_status_flags'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     657 |         irq_set_status_flags(ep->perst_irq, IRQ_NOAUTOEN);
         |         ^
>> drivers/pci/controller/pcie-rockchip-ep.c:657:38: error: use of undeclared identifier 'IRQ_NOAUTOEN'
     657 |         irq_set_status_flags(ep->perst_irq, IRQ_NOAUTOEN);
         |                                             ^
   3 errors generated.


vim +/irq_set_irq_type +633 drivers/pci/controller/pcie-rockchip-ep.c

   620	
   621	static irqreturn_t rockchip_pcie_ep_perst_irq_thread(int irq, void *data)
   622	{
   623		struct pci_epc *epc = data;
   624		struct rockchip_pcie_ep *ep = epc_get_drvdata(epc);
   625		struct rockchip_pcie *rockchip = &ep->rockchip;
   626		u32 perst = gpiod_get_value(rockchip->ep_gpio);
   627	
   628		if (perst)
   629			rockchip_pcie_ep_perst_assert(ep);
   630		else
   631			rockchip_pcie_ep_perst_deassert(ep);
   632	
 > 633		irq_set_irq_type(ep->perst_irq,
   634				 (perst ? IRQF_TRIGGER_HIGH : IRQF_TRIGGER_LOW));
   635	
   636		return IRQ_HANDLED;
   637	}
   638	
   639	static int rockchip_pcie_ep_setup_irq(struct pci_epc *epc)
   640	{
   641		struct rockchip_pcie_ep *ep = epc_get_drvdata(epc);
   642		struct rockchip_pcie *rockchip = &ep->rockchip;
   643		struct device *dev = rockchip->dev;
   644		int ret;
   645	
   646		if (!rockchip->ep_gpio)
   647			return 0;
   648	
   649		/* PCIe reset interrupt */
   650		ep->perst_irq = gpiod_to_irq(rockchip->ep_gpio);
   651		if (ep->perst_irq < 0) {
   652			dev_err(dev, "No corresponding IRQ for PERST GPIO\n");
   653			return ep->perst_irq;
   654		}
   655	
   656		ep->perst_asserted = true;
 > 657		irq_set_status_flags(ep->perst_irq, IRQ_NOAUTOEN);
   658		ret = devm_request_threaded_irq(dev, ep->perst_irq, NULL,
   659						rockchip_pcie_ep_perst_irq_thread,
   660						IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
   661						"pcie-ep-perst", epc);
   662		if (ret) {
   663			dev_err(dev, "Request PERST GPIO IRQ failed %d\n", ret);
   664			return ret;
   665		}
   666	
   667		return 0;
   668	}
   669	

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