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| author |   Timothy Pearson <tpearson@raptorengineering.com> | 2025-07-15 16:36:55 -0500 |
|---|---|---|
| committer |   Madhavan Srinivasan <maddy@linux.ibm.com> | 2025-07-26 13:07:42 +0530 |
| commit | 80f9fc2362797538ebd4fd70a1dfa838cc2c2cdb (patch) | |
| tree | a1d1a06b798debc64cdcc52c9b5c7527abfbb7bb /rust/pin-init/internal/src | |
| parent | PCI: pnv_php: Clean up allocated IRQs on unplug (diff) | |
| download | wireguard-linux-80f9fc2362797538ebd4fd70a1dfa838cc2c2cdb.tar.xz wireguard-linux-80f9fc2362797538ebd4fd70a1dfa838cc2c2cdb.zip | |
PCI: pnv_php: Work around switches with broken presence detection
The Microsemi Switchtec PM8533 PFX 48xG3 [11f8:8533] PCIe switch system
was observed to incorrectly assert the Presence Detect Set bit in its
capabilities when tested on a Raptor Computing Systems Blackbird system,
resulting in the hot insert path never attempting a rescan of the bus
and any downstream devices not being re-detected.
Work around this by additionally checking whether the PCIe data link is
active or not when performing presence detection on downstream switches'
ports, similar to the pciehp_hpc.c driver.
Signed-off-by: Shawn Anastasio <sanastasio@raptorengineering.com>
Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/505981576.1359853.1752615415117.JavaMail.zimbra@raptorengineeringinc.com
Diffstat (limited to 'rust/pin-init/internal/src')
0 files changed, 0 insertions, 0 deletions