linux-kernel - Re: [PATCH] pci: restrict 64-bit pci device to assign resource from behind of max

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Date:	Thu, 15 Oct 2015 19:32:18 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Wenlin Kang <wenlin.kang@...driver.com>
Cc:	kbuild-all@...org, bhelgaas@...gle.com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pci: restrict 64-bit pci device to assign resource from
 behind of max_pfn

Hi Wenlin,

[auto build test ERROR on pci/next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Wenlin-Kang/pci-restrict-64-bit-pci-device-to-assign-resource-from-behind-of-max_pfn/20151015-184913
config: mips-fuloong2e_defconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=mips 

All errors (new ones prefixed by >>):

   drivers/pci/setup-res.c: In function '__pci_assign_resource':
>> drivers/pci/setup-res.c:224:6: error: 'max_pfn' undeclared (first use in this function)
        (max_pfn + 1) << PAGE_SHIFT : PCIBIOS_MIN_MEM;
         ^
   drivers/pci/setup-res.c:224:6: note: each undeclared identifier is reported only once for each function it appears in

vim +/max_pfn +224 drivers/pci/setup-res.c

   218		 * For 64-bit pci device, assign resource start from the next page
   219		 * boundary above the maximum physical page address
   220		 */
   221		resource_size_t min_iomem;
   222	
   223		min_iomem = (res->flags & IORESOURCE_MEM_64) ?
 > 224					(max_pfn + 1) << PAGE_SHIFT : PCIBIOS_MIN_MEM;
   225		min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : min_iomem;
   226	#else
   227		min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;

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

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