remoteproc: core: Attach rproc asynchronously in rproc_add() path via schedule_work()

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Unlike the remoteproc firmware load path where rproc_add() call
rproc_auto_boot_callback() asynchronously and ignores the return value of
rproc_boot(), the attach path calls rproc_boot() synchronously and
propagates its return value back to rproc_add(). This means a failure
during rproc_attach() causes rproc_add() to fail and triggers resource
release, removing the remoteproc from sysfs and making it unavailable for
recovery or further boot attempts.

Align the remoteproc attach path with the firmware load path by
introducing attach_work and scheduling rproc_boot() asynchronously via
schedule_work(). This keeps the remoteproc registered and available in
sysfs even if the initial attach attempt fails, and avoids blocking
rproc_add() on the attach result.

Signed-off-by: Jingyi Wang <jingyi.wang@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260623-rproc-attach-issue-v3-1-8e24310707ce@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

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Jingyi Wang 2026-06-23 02:05:34 -07:00 • committed by Bjorn Andersson

parent 3d88927742

commit 026a3fada4

2 changed files with 14 additions and 8 deletions

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20

drivers/remoteproc/remoteproc_core.c

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2

include/linux/remoteproc.h

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