On 7/16/25 3:01 AM, Timothy Pearson wrote:
Hello all,
This series includes several fixes for bugs in the PowerNV PCIe hotplug
driver that were discovered in testing with a Microsemi Switchtec PM8533
PFX 48xG3 PCIe switch on a PowerNV system, as well as one workaround for
PCIe switches that don't correctly implement slot presence detection
such as the aforementioned one. Without the workaround, the switch works
and downstream devices can be hot-unplugged, but the devices never come
back online after being plugged in again until the system is rebooted.
Other hotplug drivers (like pciehp_hpc) use a similar workaround.
Also included are fixes for the EEH driver to make it hotplug safe,
and a small patch to enable all three attention indicator states per
the PCIe specification.
Thanks,
Shawn Anastasio (2):
PCI: pnv_php: Properly clean up allocated IRQs on unplug
PCI: pnv_php: Work around switches with broken presence detection
Timothy Pearson (4):
powerpc/eeh: Export eeh_unfreeze_pe()
powerpc/eeh: Make EEH driver device hotplug safe
PCI: pnv_php: Fix surprise plug detection and recovery
PCI: pnv_php: Enable third attention indicator state
arch/powerpc/kernel/eeh.c | 1 +
arch/powerpc/kernel/eeh_driver.c | 48 ++++--
arch/powerpc/kernel/eeh_pe.c | 10 +-
arch/powerpc/kernel/pci-hotplug.c | 3 +
drivers/pci/hotplug/pnv_php.c | 244 +++++++++++++++++++++++++++---
5 files changed, 263 insertions(+), 43 deletions(-)
Tested the patch series for EEH and hotplug on powernv, recovery is
working as expected, EEH changes looks good to me.
Tested-by: Ganesh Goudar <ganes...@linux.ibm.com>
Thanks
Ganesh
