kernel/linux.git/drivers/pmdomain, branch v7.1

pmdomain: imx: fix OF node refcount

2026-06-03T09:49:37+00:00

for_each_child_of_node_scoped() decrements the reference count of the nod after each iteration. Assigning it without incrementing the refcount to a dynamically allocated platform device will result in a double put in platform_device_release(). Add the missing call to of_node_get(). Cc: stable@vger.kernel.org Fixes: 3e4d109ee8fc ("pmdomain: imx: gpc: Simplify with scoped for each OF child loop") Signed-off-by: Bartosz Golaszewski Signed-off-by: Ulf Hansson

pmdomain: ti_sci: add wakeup constraint to parent devices of wakeup source

2026-06-03T09:47:20+00:00

Set wakeup constraint for any device in a wakeup path. All parent devices of a wakeup device should not be turned off during suspend. This ensures the wakeup device is kept on while the system is suspended. Cc: stable@vger.kernel.org Fixes: 9d8aa0dd3be4 ("pmdomain: ti_sci: add wakeup constraint management") Reported-by: Vitor Soares Closes: https://lore.kernel.org/linux-pm/c0fe43a2339c802e9ce5900092cd530a2ba17a6b.camel@gmail.com/ Signed-off-by: Kendall Willis Reviewed-by: Sebin Francis Signed-off-by: Ulf Hansson

pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

2026-04-27T12:53:30+00:00

In scpsys_get_bus_protection_legacy(), of_find_node_with_property() returns a device node with its reference count incremented. The function then calls of_node_put(node) before checking whether syscon_regmap_lookup_by_phandle() returns an error. If an error occurs, dev_err_probe() dereferences the node pointer to print diagnostic information, but the node memory may have already been freed due to the earlier of_node_put(), leading to a use-after-free vulnerability. Fix this by moving the of_node_put() call after the error check, ensuring the node is still valid when accessed in the error path. Fixes: c29345fa5f66 ("pmdomain: mediatek: Refactor bus protection regmaps retrieval") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang Signed-off-by: Ulf Hansson

pmdomain: core: Fix detach procedure for virtual devices in genpd

2026-04-27T12:36:17+00:00

If a device is attached to a PM domain through genpd_dev_pm_attach_by_id(), genpd calls pm_runtime_enable() for the corresponding virtual device that it registers. While this avoids boilerplate code in drivers, there is no corresponding call to pm_runtime_disable() in genpd_dev_pm_detach(). This means these virtual devices are typically detached from its genpd, while runtime PM remains enabled for them, which is not how things are designed to work. In worst cases it may lead to critical errors, like a NULL pointer dereference bug in genpd_runtime_suspend(), which was recently reported. For another case, we may end up keeping an unnecessary vote for a performance state for the device. To fix these problems, let's add this missing call to pm_runtime_disable() in genpd_dev_pm_detach(). Reported-by: Geert Uytterhoeven Closes: https://lore.kernel.org/all/CAMuHMdWapT40hV3c+CSBqFOW05aWcV1a6v_NiJYgoYi0i9_PDQ@mail.gmail.com/ Fixes: 3c095f32a92b ("PM / Domains: Add support for multi PM domains per device to genpd") Cc: stable@vger.kernel.org Tested-by: Geert Uytterhoeven Signed-off-by: Ulf Hansson

pmdomain: qcom: rpmhpd: Add power domains for Hawi SoC

2026-04-08T10:01:37+00:00

Add the RPMh power domains required for the Hawi SoC. This includes new definitions for domains supplying specific hardware components: - DCX: supplies VDD_DISP - GBX: supplies VDD_GFX_BX Reviewed-by: Taniya Das Reviewed-by: Konrad Dybcio Signed-off-by: Fenglin Wu Reviewed-by: Dmitry Baryshkov Signed-off-by: Ulf Hansson

pmdomain: qcom: cpr: add COMPILE_TEST support

2026-04-08T09:50:04+00:00

Allows the buildbots to build the driver on other platforms. There's nothing special arch specific thing going on here. Signed-off-by: Rosen Penev Signed-off-by: Ulf Hansson

pmdomain: Merge branch fixes into next

2026-04-01T11:34:40+00:00

Merge the pmdomain fixes for v7.0-rc[n] into the next branch, to allow them to get tested together with the pmdomain changes that are targeted for the next release. Signed-off-by: Ulf Hansson

pmdomain: qcom: cpr: simplify main allocation

2026-04-01T11:12:11+00:00

Remove kcalloc by using a flexible array member to combine allocations. Signed-off-by: Rosen Penev Reviewed-by: Konrad Dybcio Signed-off-by: Ulf Hansson

pmdomain: bcm: bcm2835-power: Replace open-coded polling with readl_poll_timeout_atomic()

2026-04-01T11:12:11+00:00

Replace hand-rolled ktime_get_ns()/cpu_relax() polling loops with readl_poll_timeout_atomic() for the power-on (POWOK), and memory repair (MRDONE) waits. No functional change intended. Signed-off-by: Maíra Canal Signed-off-by: Ulf Hansson

pmdomain: sunxi: Add support for A733 to Allwinner PCK600 driver

2026-04-01T11:12:11+00:00

The Allwinner A733 PCK600, similar to A523 PCK600, is likely a customized version of ARM PCK-600 power controller. It shares the same BSP driver with A523. According to the BSP provided by Radxa, unlike A523, it doesn't require reset, as well as a different pair of delay values. Make reset optional in the sunxi pck600 driver and add support for A733. Signed-off-by: Yuanshen Cao Reviewed-by: Chen-Yu Tsai # matched against BSP driver Acked-by: Jernej Skrabec Signed-off-by: Ulf Hansson