linux-kernel - Re: [PATCH v2] PCI: mediatek: Fix sparse warning caused to virt_to

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Message-ID: <202311212050.Z3EDRIR3-lkp@intel.com>
Date:   Tue, 21 Nov 2023 20:18:20 +0800
From:   kernel test robot <lkp@...el.com>
To:     Stanislav Kinsburskii <skinsburskii@...ux.microsoft.com>,
        ryder.lee@...iatek.com, jianjun.wang@...iatek.com,
        lpieralisi@...nel.org, kw@...ux.com, robh@...nel.org,
        bhelgaas@...gle.com, matthias.bgg@...il.com,
        angelogioacchino.delregno@...labora.com, linux-pci@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     oe-kbuild-all@...ts.linux.dev
Subject: Re: [PATCH v2] PCI: mediatek: Fix sparse warning caused to
 virt_to_phys() prototype change

Hi Stanislav,

kernel test robot noticed the following build warnings:

[auto build test WARNING on pci/next]
[also build test WARNING on pci/for-linus linus/master v6.7-rc2 next-20231121]
[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/Stanislav-Kinsburskii/PCI-mediatek-Fix-sparse-warning-caused-to-virt_to_phys-prototype-change/20231121-080253
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/170052491316.21557.13173111699965824301.stgit%40skinsburskii.
patch subject: [PATCH v2] PCI: mediatek: Fix sparse warning caused to virt_to_phys() prototype change
config: s390-randconfig-r113-20231121 (https://download.01.org/0day-ci/archive/20231121/202311212050.Z3EDRIR3-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231121/202311212050.Z3EDRIR3-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311212050.Z3EDRIR3-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/pci/controller/pcie-mediatek.c:400:62: sparse: sparse: incorrect type in argument 1 (different modifiers) @@     expected void volatile *address @@     got void const * @@
   drivers/pci/controller/pcie-mediatek.c:400:62: sparse:     expected void volatile *address
   drivers/pci/controller/pcie-mediatek.c:400:62: sparse:     got void const *
   drivers/pci/controller/pcie-mediatek.c:523:66: sparse: sparse: incorrect type in argument 1 (different modifiers) @@     expected void volatile *address @@     got void const * @@
   drivers/pci/controller/pcie-mediatek.c:523:66: sparse:     expected void volatile *address
   drivers/pci/controller/pcie-mediatek.c:523:66: sparse:     got void const *

vim +400 drivers/pci/controller/pcie-mediatek.c

   393	
   394	static void mtk_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
   395	{
   396		struct mtk_pcie_port *port = irq_data_get_irq_chip_data(data);
   397		phys_addr_t addr;
   398	
   399		/* MT2712/MT7622 only support 32-bit MSI addresses */
 > 400		addr = virt_to_phys((__force const void *)port->base + PCIE_MSI_VECTOR);
   401		msg->address_hi = 0;
   402		msg->address_lo = lower_32_bits(addr);
   403	
   404		msg->data = data->hwirq;
   405	
   406		dev_dbg(port->pcie->dev, "msi#%d address_hi %#x address_lo %#x\n",
   407			(int)data->hwirq, msg->address_hi, msg->address_lo);
   408	}
   409	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki