3:59 p.m.
Hi Tiezhu,
[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on pci/next]
[also build test WARNING on v5.9-rc5 next-20200911]
[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]
url:
https://github.com/0day-ci/linux/commits/Tiezhu-Yang/PCI-portdrv-Only-dis...
base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: x86_64-randconfig-s021-20200913 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
# apt-get install sparse
# sparse version: v0.6.2-191-g10164920-dirty
# save the attached .config to linux build tree
make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
sparse warnings: (new ones prefixed by >>)
> drivers/pci/pcie/portdrv_pci.c:167:38: sparse: sparse: restricted
pci_power_t degrades to integer
drivers/pci/pcie/portdrv_pci.c:167:57: sparse:
sparse: restricted pci_power_t degrades to integer
# https://github.com/0day-ci/linux/commit/554a10648754bd244b64a233c257821c4...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Tiezhu-Yang/PCI-portdrv-Only-disable-Bus-Master-on-kexec-reboot-and-connected-PCI-devices/20200914-043100
git checkout 554a10648754bd244b64a233c257821c4719be0e
vim +167 drivers/pci/pcie/portdrv_pci.c
149
150 static void pcie_portdrv_shutdown(struct pci_dev *dev)
151 {
152 if (pci_bridge_d3_possible(dev)) {
153 pm_runtime_forbid(&dev->dev);
154 pm_runtime_get_noresume(&dev->dev);
155 pm_runtime_dont_use_autosuspend(&dev->dev);
156 }
157
158 pcie_port_device_remove(dev);
159
160 /*
161 * If this is a kexec reboot, turn off Bus Master bit on the
162 * device to tell it to not continue to do DMA. Don't touch
163 * devices in D3cold or unknown states.
164 * If it is not a kexec reboot, firmware will hit the PCI
165 * devices with big hammer and stop their DMA any way.
166 */
167 if (kexec_in_progress && (dev->current_state <=
PCI_D3hot))
168 pci_disable_device(dev);
169 }
170
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org