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| author | Keith Busch | 2018-09-20 18:27:11 +0200 |
|---|---|---|
| committer | Bjorn Helgaas | 2018-09-21 19:18:10 +0200 |
| commit | c4eed62a214330908eec11b0dc170d34fa50b412 (patch) | |
| tree | 8c8f5bfc802300f7aab110888fd25bce0d1bbae2 /drivers/pci/pci.h | |
| parent | PCI/AER: Don't read upstream ports below fatal errors (diff) | |
| download | kernel-qcow2-linux-c4eed62a214330908eec11b0dc170d34fa50b412.tar.gz kernel-qcow2-linux-c4eed62a214330908eec11b0dc170d34fa50b412.tar.xz kernel-qcow2-linux-c4eed62a214330908eec11b0dc170d34fa50b412.zip | |
PCI/ERR: Use slot reset if available
The secondary bus reset may have link side effects that a hotplug capable
port may incorrectly react to. Use the slot specific reset for hotplug
ports, fixing the undesirable link down-up handling during error
recovering.
Signed-off-by: Keith Busch <keith.busch@intel.com>
[bhelgaas: fold in
https://lore.kernel.org/linux-pci/20180926152326.14821-1-keith.busch@intel.com
for issue reported by Stephen Rothwell <sfr@canb.auug.org.au>]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Sinan Kaya <okaya@kernel.org>
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index b5af5642c6c9..b4ada8c383a8 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -35,6 +35,7 @@ int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai, int pci_probe_reset_function(struct pci_dev *dev); int pci_bridge_secondary_bus_reset(struct pci_dev *dev); +int pci_bus_error_reset(struct pci_dev *dev); /** * struct pci_platform_pm_ops - Firmware PM callbacks @@ -136,6 +137,7 @@ static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; } /* Lock for read/write access to pci device and bus lists */ extern struct rw_semaphore pci_bus_sem; +extern struct mutex pci_slot_mutex; extern raw_spinlock_t pci_lock; |