kernel/linux.git/drivers/pmdomain, branch v7.0.13

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

2026-06-19T11:48:08+00:00

commit 4db207599acfc9d676340daa2dc6b52bfca17db4 upstream. 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 Signed-off-by: Greg Kroah-Hartman

pmdomain: imx: fix OF node refcount

2026-06-19T11:48:07+00:00

commit fba0510cd62666951dcc0221527edc0c47ae6599 upstream. 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 Signed-off-by: Greg Kroah-Hartman

pmdomain: imx: scu-pd: Fix device_node reference leak during ->probe()

2026-05-23T11:08:51+00:00

[ Upstream commit c8e9b6a55702be6c6d034e973d519c52c3848415 ] When calling of_parse_phandle_with_args(), the caller is responsible to call of_node_put() to release the reference of device node. In imx_sc_pd_get_console_rsrc(), it does not release the reference. Fixes: 893cfb99734f ("firmware: imx: scu-pd: do not power off console domain") Signed-off-by: Felix Gu Reviewed-by: Peng Fan Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin

pmdomain: ti: omap_prm: Fix a reference leak on device node

2026-05-23T11:08:51+00:00

[ Upstream commit 44c28e1c52764fef6dd1c1ada3a248728812e67f ] When calling of_parse_phandle_with_args(), the caller is responsible to call of_node_put() to release the reference of device node. In omap_prm_domain_attach_dev, it does not release the reference. Fixes: 58cbff023bfa ("soc: ti: omap-prm: Add basic power domain support") Signed-off-by: Felix Gu Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin

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

2026-05-14T13:31:14+00:00

commit 26735dfdd8930d9ef1fa92e590a9bf77726efdf6 upstream. 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 Signed-off-by: Greg Kroah-Hartman

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

2026-05-14T13:31:10+00:00

commit ec1fcddb3117d9452210e838fd37389ee61e10e8 upstream. 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 Signed-off-by: Greg Kroah-Hartman

pmdomain: imx8mp-blk-ctrl: Keep the NOC_HDCP clock enabled

2026-04-01T11:03:07+00:00

Keep the NOC_HDCP clock always enabled to fix the potential hang caused by the NoC ADB400 port power down handshake. Fixes: 77b0ddb42add ("soc: imx: add i.MX8MP HDMI blk ctrl HDCP/HRV_MWR") Signed-off-by: Jacky Bai Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson

Merge tag 'pmdomain-v7.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm

2026-03-20T16:46:15+00:00

Pull pmdomain fixes from Ulf Hansson: - bcm: increase ASB control timeout for bcm2835 - mediatek: fix power domain count * tag 'pmdomain-v7.0-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: pmdomain: bcm: bcm2835-power: Increase ASB control timeout pmdomain: mediatek: Fix power domain count

pmdomain: bcm: bcm2835-power: Increase ASB control timeout

2026-03-18T18:15:34+00:00

The bcm2835_asb_control() function uses a tight polling loop to wait for the ASB bridge to acknowledge a request. During intensive workloads, this handshake intermittently fails for V3D's master ASB on BCM2711, resulting in "Failed to disable ASB master for v3d" errors during runtime PM suspend. As a consequence, the failed power-off leaves V3D in a broken state, leading to bus faults or system hangs on later accesses. As the timeout is insufficient in some scenarios, increase the polling timeout from 1us to 5us, which is still negligible in the context of a power domain transition. Also, replace the open-coded ktime_get_ns()/ cpu_relax() polling loop with readl_poll_timeout_atomic(). Cc: stable@vger.kernel.org Fixes: 670c672608a1 ("soc: bcm: bcm2835-pm: Add support for power domains under a new binding.") Signed-off-by: Maíra Canal Reviewed-by: Stefan Wahren Signed-off-by: Ulf Hansson

pmdomain: mediatek: Fix power domain count

2026-03-12T13:51:52+00:00

The wrong value of the number of domains is wrong which leads to failures when trying to enumerate nested power domains. PM: genpd_xlate_onecell: invalid domain index 0 PM: genpd_xlate_onecell: invalid domain index 1 PM: genpd_xlate_onecell: invalid domain index 3 PM: genpd_xlate_onecell: invalid domain index 4 PM: genpd_xlate_onecell: invalid domain index 5 PM: genpd_xlate_onecell: invalid domain index 13 PM: genpd_xlate_onecell: invalid domain index 14 Attempts to use these power domains fail, so fix this by using the correct value of calculated power domains. Signed-off-by: Adam Ford Fixes: 88914db077b6 ("pmdomain: mediatek: Add support for Hardware Voter power domains") Reviewed-by: AngeloGioacchino Del Regno Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson