linux/drivers/interconnect
Mike Tipton 388c90c577 interconnect: Treat xlate() returning NULL node as an error
[ Upstream commit ad2ab1297d ]

Currently, if provider->xlate() or provider->xlate_extended()
"successfully" return a NULL node, then of_icc_get_from_provider() won't
consider that an error and will successfully return the NULL node. This
bypasses error handling in of_icc_get_by_index() and leads to NULL
dereferences in path_find().

This could be avoided by ensuring provider callbacks always return an
error for NULL nodes, but it's better to explicitly protect against this
in the common framework.

Fixes: 87e3031b6f ("interconnect: Allow endpoints translation via DT")
Signed-off-by: Mike Tipton <quic_mdtipton@quicinc.com>
Link: https://lore.kernel.org/r/20231025145829.11603-1-quic_mdtipton@quicinc.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-08 11:29:45 +01:00
..
qcom interconnect: qcom: qcs404: Remove GPU and display RPM IDs 2020-12-16 10:56:56 +01:00
core.c interconnect: Treat xlate() returning NULL node as an error 2024-01-08 11:29:45 +01:00
internal.h interconnect: Add helpers for enabling/disabling a path 2023-08-30 16:27:13 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile interconnect: qcom: Add sdm845 interconnect provider driver 2019-01-22 13:37:25 +01:00