linux-kernel - RE: [PATCH 2/2] PCI: Versal CPM: Add support for Versal CPM Root Port driver

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Message-ID: <MN2PR02MB6336B69A0FE162C1D6D6370CA53E0@MN2PR02MB6336.namprd02.prod.outlook.com>
Date:   Wed, 8 Jan 2020 10:16:10 +0000
From:   Bharat Kumar Gogada <bharatku@...inx.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>,
        "kbuild@...ts.01.org" <kbuild@...ts.01.org>
CC:     "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        Ravikiran Gummaluri <rgummal@...inx.com>
Subject: RE: [PATCH 2/2] PCI: Versal CPM: Add support for Versal CPM Root Port
 driver

Thanks Dan, will fix it and resend.

> -----Original Message-----
> From: Dan Carpenter <dan.carpenter@...cle.com>
> Sent: Monday, January 6, 2020 12:20 AM
> To: kbuild@...ts.01.org; Bharat Kumar Gogada <bharatku@...inx.com>
> Cc: kbuild-all@...ts.01.org; linux-pci@...r.kernel.org; linux-
> kernel@...r.kernel.org; bhelgaas@...gle.com; Ravikiran Gummaluri
> <rgummal@...inx.com>; Bharat Kumar Gogada <bharatku@...inx.com>
> Subject: Re: [PATCH 2/2] PCI: Versal CPM: Add support for Versal CPM Root Port
> driver
> 
> Hi Bharat,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> url:    https://github.com/0day-ci/linux/commits/Bharat-Kumar-Gogada/Adding-
> support-for-versal-CPM-as-Root-Port-driver/20191223-193219
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
> 
> If you fix the issue, kindly add following tag
> Reported-by: kbuild test robot <lkp@...el.com>
> Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
> 
> New smatch warnings:
> drivers/pci/controller/pcie-xilinx-cpm.c:330 xilinx_cpm_pcie_init_irq_domain()
> warn: passing zero to 'PTR_ERR'
> 
> Old smatch warnings:
> drivers/pci/controller/pcie-xilinx-cpm.c:338 xilinx_cpm_pcie_init_irq_domain()
> warn: passing zero to 'PTR_ERR'
> 
> # https://github.com/0day-
> ci/linux/commit/f107713acb796e598f16a23b33af74fa382921b2
> git remote add linux-review https://github.com/0day-ci/linux
> git remote update linux-review
> git checkout f107713acb796e598f16a23b33af74fa382921b2
> vim +/PTR_ERR +330 drivers/pci/controller/pcie-xilinx-cpm.c
> 
> f107713acb796e Bharat Kumar Gogada 2019-12-20  320  static int
> xilinx_cpm_pcie_init_irq_domain(struct xilinx_cpm_pcie_port *port)
> f107713acb796e Bharat Kumar Gogada 2019-12-20  321  {
> f107713acb796e Bharat Kumar Gogada 2019-12-20  322  	struct device *dev =
> port->dev;
> f107713acb796e Bharat Kumar Gogada 2019-12-20  323  	struct device_node
> *node = dev->of_node;
> f107713acb796e Bharat Kumar Gogada 2019-12-20  324  	struct device_node
> *pcie_intc_node;
> f107713acb796e Bharat Kumar Gogada 2019-12-20  325
> f107713acb796e Bharat Kumar Gogada 2019-12-20  326  	/* Setup INTx */
> f107713acb796e Bharat Kumar Gogada 2019-12-20  327  	pcie_intc_node =
> of_get_next_child(node, NULL);
> f107713acb796e Bharat Kumar Gogada 2019-12-20  328  	if (!pcie_intc_node) {
>                                                             ^^^^^^^^^^^^^^^
> 
> f107713acb796e Bharat Kumar Gogada 2019-12-20  329  		dev_err(dev,
> "No PCIe Intc node found\n");
> f107713acb796e Bharat Kumar Gogada 2019-12-20 @330  		return
> PTR_ERR(pcie_intc_node);
>                                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> (This means success).
> 
> f107713acb796e Bharat Kumar Gogada 2019-12-20  331  	}
> f107713acb796e Bharat Kumar Gogada 2019-12-20  332
> f107713acb796e Bharat Kumar Gogada 2019-12-20  333  	port->leg_domain =
> irq_domain_add_linear(pcie_intc_node, INTX_NUM,
> f107713acb796e Bharat Kumar Gogada 2019-12-20  334
> 			 &intx_domain_ops,
> f107713acb796e Bharat Kumar Gogada 2019-12-20  335
> 			 port);
> f107713acb796e Bharat Kumar Gogada 2019-12-20  336  	if (!port->leg_domain)
> {
> f107713acb796e Bharat Kumar Gogada 2019-12-20  337  		dev_err(dev,
> "Failed to get a INTx IRQ domain\n");
> f107713acb796e Bharat Kumar Gogada 2019-12-20  338  		return
> PTR_ERR(port->leg_domain);
> f107713acb796e Bharat Kumar Gogada 2019-12-20  339  	}
> f107713acb796e Bharat Kumar Gogada 2019-12-20  340
> f107713acb796e Bharat Kumar Gogada 2019-12-20  341  	return 0;
> f107713acb796e Bharat Kumar Gogada 2019-12-20  342  }
> 
> ---
> 0-DAY kernel test infrastructure                 Open Source Technology Center
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation