octeontx2-af: enforce single RVU AF probe

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On Octeon series SoCs, the AF is an integrated device within the SoC, and
hardware resources such as NPC, NIX and related blocks are global and
coordinated by the AF driver.  Physical and virtual functions request those
resources via AF mailbox messages, so two AF driver instances cannot both
own that global state; firmware exposes only one AF PCI function at boot
and any further octeontx2-af PCI probe returns -EBUSY so software matches
the single-AF model.

Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Link: https://patch.msgid.link/20260609040453.711932-2-rkannoth@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Ratheesh Kannoth 2026-06-09 09:34:45 +05:30 • committed by Jakub Kicinski

parent 8d2747ab8c

commit 6056a11b8d

1 changed files with 13 additions and 1 deletions

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drivers/net/ethernet/marvell/octeontx2/af/rvu.c

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