John Hubbard d3f36fa57a gpu: nova-core: fix aux device registration for multi-GPU systems ...

The auxiliary device registration was using a hardcoded ID of 0, which
caused probe() to fail on multi-GPU systems with:

   sysfs: cannot create duplicate filename '/bus/auxiliary/devices/NovaCore.nova-drm.0'

Fix this by using an atomic counter to generate unique IDs for each
GPU's aux device registration. The TODO item to eventually use XArray
for recycling aux device IDs is retained, but for now, this works very
nicely.

This has the side effect of making debugfs[1] work on multi-GPU systems.

[1] https://lore.kernel.org/20260203224757.871729-1-ttabi@nvidia.com

Reviewed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Link: https://patch.msgid.link/20260221020952.412352-2-jhubbard@nvidia.com
[ Use LKMM atomics; inline and slightly reword TODO comment. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

2026-02-24 15:44:51 +01:00

..

accel

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accessibility

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acpi

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amba

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android

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ata

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atm

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auxdisplay

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base

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bcma

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block

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bluetooth

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bus

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cache

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cdrom

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cdx

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char

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clk

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clocksource

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comedi

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connector

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counter

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cpufreq

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cpuidle

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crypto

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cxl

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dax

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dca

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

devfreq

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dibs

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dio

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dma

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dma-buf

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dpll

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edac

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eisa

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extcon

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firewire

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firmware

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fpga

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fsi

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fwctl

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gnss

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gpib

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gpio

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gpu

gpu: nova-core: fix aux device registration for multi-GPU systems

2026-02-24 15:44:51 +01:00

greybus

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hid

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hsi

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hte

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hv

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hwmon

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hwspinlock

Merge tag 'soc-drivers-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2026-02-10 20:45:30 -08:00

hwtracing

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i2c

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i3c

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idle

intel_idle: Add C-states validation

2026-01-07 21:17:43 +01:00

iio

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infiniband

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input

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interconnect

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iommu

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ipack

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irqchip

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isdn

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leds

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macintosh

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mailbox

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

mcb

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md

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media

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memory

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memstick

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message

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mfd

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misc

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mmc

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most

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mtd

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mux

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net

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nfc

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ntb

Merge tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

2026-02-21 11:02:58 -08:00

nubus

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nvdimm

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nvme

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nvmem

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of

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opp

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parisc

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parport

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pci

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pcmcia

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peci

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perf

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phy

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pinctrl

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platform

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pmdomain

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pnp

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power

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powercap

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pps

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ps3

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ptp

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pwm

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rapidio

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ras

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regulator

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remoteproc

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resctrl

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reset

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rpmsg

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rtc

Merge tag 'rtc-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

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s390

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sbus

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scsi

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sh

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siox

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slimbus

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soc

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soundwire

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spi

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spmi

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ssb

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staging

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target

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tc

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tee

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thermal

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thunderbolt

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tty

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ufs

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uio

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usb

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vdpa

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vfio

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vhost

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video

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virt

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virtio

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w1

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watchdog

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xen

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zorro

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Kconfig

…

Makefile

phy: enter drivers/phy/Makefile even without CONFIG_GENERIC_PHY

2026-02-04 20:45:26 +05:30