ASoC: amd: acp3x-es83xx: Switch to use acpi_bus_get_primary_device()

Replace acpi_get_first_physical_node() that is slated for removal
with acpi_bus_get_primary_device() that takes a reference to the
device it is about to return.

This addresses a potential use-after-free that may occur if the
device returned by acpi_get_first_physical_node() is removed right
after dropping its ACPI companion's physical_node_lock in that
function.

It also fixes a device reference counting issue that may lead to a
premature device release if devm_kzalloc() fails in acp3x_es83xx_probe().

Fixes: 54fcd9dd44b2 ("ASoC: amd: acp: Add machine driver that enables sound for systems with a ES8336 codec")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/2310746.NgBsaNRSFp@rafael.j.wysocki

0 files changed, 0 insertions, 0 deletions