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SubjectRe: [PATCH v2 2/2] PCI: Rockchip: Add Rockchip PCIe controller support
Hi,

[auto build test WARNING on pci/next]
[also build test WARNING on v4.7-rc2 next-20160609]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Shawn-Lin/Documentation-bindings-add-dt-doc-for-Rockchip-PCIe-controller/20160608-161005
base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205
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=arm64

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

drivers/pci/host/pcie-rockchip.c: In function 'rockchip_pcie_probe':
>> drivers/pci/host/pcie-rockchip.c:876:5: warning: 'err' may be used uninitialized in this function [-Wmaybe-uninitialized]
if (err)
^

vim +/err +876 drivers/pci/host/pcie-rockchip.c

860 int reg_no;
861 int err = 0;
862 int offset = 0;
863
864 LIST_HEAD(res);
865
866 if (!dev->of_node)
867 return -ENODEV;
868
869 port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
870 if (!port)
871 return -ENOMEM;
872
873 port->dev = dev;
874
875 err = rockchip_pcie_parse_dt(port);
> 876 if (err)
877 return err;
878
879 err = clk_prepare_enable(port->aclk_pcie);
880 if (err) {
881 dev_err(dev, "Unable to enable aclk_pcie clock.\n");
882 goto err_aclk_pcie;
883 }
884

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