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PCI/AER: Add uevents in AER and EEH error/resume

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Devices can go offline when erors reported. This patch adds a change
to the kernel object and lets udev know of error. When device resumes,
a change is also set reporting device as online. Therefore, EEH and
AER events are better propagated to user space for PCI devices in all
arches.

Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Bryant G. Ly
2018-01-05 10:45:47 -06:00
committed by Michael Ellerman
parent 64ba3dc7bf
commit 856e1eb9bd
3 changed files with 45 additions and 0 deletions
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6
arch/powerpc/kernel/eeh_driver.c
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@@ -228,6 +228,7 @@ static void *eeh_report_error(void *data, void *userdata)
edev->in_error = true;
eeh_pcid_put(dev);
pci_uevent_ers(dev, PCI_ERS_RESULT_NONE);
return NULL;
}
@@ -381,6 +382,10 @@ static void *eeh_report_resume(void *data, void *userdata)
driver->err_handler->resume(dev);
eeh_pcid_put(dev);
pci_uevent_ers(dev, PCI_ERS_RESULT_RECOVERED);
#ifdef CONFIG_PCI_IOV
eeh_ops->notify_resume(eeh_dev_to_pdn(edev));
#endif
return NULL;
}
@@ -416,6 +421,7 @@ static void *eeh_report_failure(void *data, void *userdata)
driver->err_handler->error_detected(dev, pci_channel_io_perm_failure);
eeh_pcid_put(dev);
pci_uevent_ers(dev, PCI_ERS_RESULT_DISCONNECT);
return NULL;
}