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SubjectRe: [PATCH v13 2/6] PCI/AER: Factor out error reporting from AER
Hi Oza,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.16]
[cannot apply to pci/next linus/master next-20180410]
[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/Oza-Pawandeep/Address-error-and-recovery-for-AER-and-DPC/20180410-045644
config: x86_64-randconfig-s4-04101607 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

Note: the linux-review/Oza-Pawandeep/Address-error-and-recovery-for-AER-and-DPC/20180410-045644 HEAD db413d3e52b272ef8e6f03ff125e65468abd31e6 builds fine.
It only hurts bisectibility.

All errors (new ones prefixed by >>):

drivers/pci/pcie/err.o: In function `reset_link':
>> drivers/pci/pcie/err.c:197: undefined reference to `find_aer_service'

vim +197 drivers/pci/pcie/err.c

181
182 static pci_ers_result_t reset_link(struct pci_dev *dev)
183 {
184 struct pci_dev *udev;
185 pci_ers_result_t status;
186 struct pcie_port_service_driver *driver = NULL;
187
188 if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
189 /* Reset this port for all subordinates */
190 udev = dev;
191 } else {
192 /* Reset the upstream component (likely downstream port) */
193 udev = dev->bus->self;
194 }
195
196 /* Use the aer driver of the component firstly */
> 197 driver = find_aer_service(udev);
198
199 if (driver && driver->reset_link) {
200 status = driver->reset_link(udev);
201 } else if (udev->has_secondary_link) {
202 status = default_reset_link(udev);
203 } else {
204 pci_printk(KERN_DEBUG, dev,
205 "no link-reset support at upstream device %s\n",
206 pci_name(udev));
207 return PCI_ERS_RESULT_DISCONNECT;
208 }
209
210 if (status != PCI_ERS_RESULT_RECOVERED) {
211 pci_printk(KERN_DEBUG, dev,
212 "link reset at upstream device %s failed\n",
213 pci_name(udev));
214 return PCI_ERS_RESULT_DISCONNECT;
215 }
216
217 return status;
218 }
219

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