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| author | Sinan Kaya <okaya@codeaurora.org> | 2018-07-20 01:04:09 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2018-07-20 01:04:23 +0200 |
| commit | 1842623850d09b0b1147d4974573aa305658d97f (patch) | |
| tree | 24f18b1c09237b2ff8ce447abd23994a7ea53a7b /drivers/pci/pcie | |
| parent | PCI/IOV: Tidy pci_sriov_set_totalvfs() (diff) | |
| download | linux-1842623850d09b0b1147d4974573aa305658d97f.tar.xz linux-1842623850d09b0b1147d4974573aa305658d97f.zip | |
PCI: Handle error return from pci_reset_bridge_secondary_bus()
Commit 01fd61c0b9bd ("PCI: Add a return type for
pci_reset_bridge_secondary_bus()") added a return value to the function to
return if a device is accessible following a reset. Callers are not
checking the value.
Pass error code up high in the stack if device is not accessible.
Fixes: 01fd61c0b9bd ("PCI: Add a return type for pci_reset_bridge_secondary_bus()")
Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie')
| -rw-r--r-- | drivers/pci/pcie/aer.c | 5 | ||||
| -rw-r--r-- | drivers/pci/pcie/err.c | 6 |
2 files changed, 7 insertions, 4 deletions
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index a2e88386af28..bde723db3d65 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -1305,6 +1305,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) { u32 reg32; int pos; + int rc; pos = dev->aer_cap; @@ -1313,7 +1314,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) reg32 &= ~ROOT_PORT_INTR_ON_MESG_MASK; pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32); - pci_reset_bridge_secondary_bus(dev); + rc = pci_reset_bridge_secondary_bus(dev); pci_printk(KERN_DEBUG, dev, "Root Port link has been reset\n"); /* Clear Root Error Status */ @@ -1325,7 +1326,7 @@ static pci_ers_result_t aer_root_reset(struct pci_dev *dev) reg32 |= ROOT_PORT_INTR_ON_MESG_MASK; pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, reg32); - return PCI_ERS_RESULT_RECOVERED; + return rc ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED; } /** diff --git a/drivers/pci/pcie/err.c b/drivers/pci/pcie/err.c index f7ce0cb0b0b7..03075cff86f4 100644 --- a/drivers/pci/pcie/err.c +++ b/drivers/pci/pcie/err.c @@ -175,9 +175,11 @@ out: */ static pci_ers_result_t default_reset_link(struct pci_dev *dev) { - pci_reset_bridge_secondary_bus(dev); + int rc; + + rc = pci_reset_bridge_secondary_bus(dev); pci_printk(KERN_DEBUG, dev, "downstream link has been reset\n"); - return PCI_ERS_RESULT_RECOVERED; + return rc ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED; } static pci_ers_result_t reset_link(struct pci_dev *dev, u32 service) |