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Commit ee37daf9 authored by Jamie Iles's avatar Jamie Iles Committed by Zeng Heng
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i2c: acpi: fix resource leak in reconfiguration device addition

mainline inclusion
from mainline-v5.15-rc5
commit 6558b646
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9R4O7
CVE: CVE-2021-47425

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6558b646ce1c2a872fe1c2c7cb116f05a2c1950f



----------------------------------------------------

acpi_i2c_find_adapter_by_handle() calls bus_find_device() which takes a
reference on the adapter which is never released which will result in a
reference count leak and render the adapter unremovable.  Make sure to
put the adapter after creating the client in the same manner that we do
for OF.

Fixes: 525e6fab ("i2c / ACPI: add support for ACPI reconfigure notifications")
Signed-off-by: default avatarJamie Iles <quic_jiles@quicinc.com>
Acked-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
[wsa: fixed title]
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
Signed-off-by: default avatarZeng Heng <zengheng4@huawei.com>
parent f5fda1e9
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