Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v7.0.11 2026-05-14T13:31:14+00:00 2026-05-14T13:31:14+00:00 Ulf Hansson ulf.hansson@linaro.org 2026-04-17T11:13:31+00:00 urn:sha1:8d44391a7f29e4601e8243f13498d0219bab2576 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 <geert@linux-m68k.org> 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 <geert+renesas@glider.be> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2026-02-22T01:09:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-22T00:37:42+00:00 urn:sha1:bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43 This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 2026-02-21T09:02:28+00:00 Kees Cook kees@kernel.org 2026-02-21T07:49:23+00:00 urn:sha1:69050f8d6d075dc01af7a5f2f550a8067510366f This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org> 2025-12-04T21:50:39+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-04T21:50:39+00:00 urn:sha1:52206f82d9244546e5790f5ad64465343aa7ffd5 Pull pmdomain updates from Ulf Hansson: "pmdomain core: - Allow power-off for out-of-band wakeup-capable devices - Drop the redundant call to dev_pm_domain_detach() for the amba bus - Extend the genpd governor for CPUs to account for IPIs pmdomain providers: - bcm: Add support for BCM2712 - mediatek: Add support for MFlexGraphics power domains - mediatek: Add support for MT8196 power domains - qcom: Add RPMh power domain support for Kaanapali - rockchip: Add support for RV1126B pmdomain consumers: - usb: dwc3: Enable out of band wakeup for i.MX95 - usb: chipidea: Enable out of band wakeup for i.MX95" * tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (26 commits) pmdomain: Extend the genpd governor for CPUs to account for IPIs smp: Introduce a helper function to check for pending IPIs pmdomain: mediatek: convert from clk round_rate() to determine_rate() amba: bus: Drop dev_pm_domain_detach() call pmdomain: bcm: bcm2835-power: Prepare to support BCM2712 pmdomain: mediatek: mtk-mfg: select MAILBOX in Kconfig pmdomain: mediatek: Add support for MFlexGraphics pmdomain: mediatek: Fix build-errors cpuidle: psci: Replace deprecated strcpy in psci_idle_init_cpu pmdomain: rockchip: Add support for RV1126B pmdomain: mediatek: Add support for MT8196 HFRPSYS power domains pmdomain: mediatek: Add support for MT8196 SCPSYS power domains pmdomain: mediatek: Add support for secure HWCCF infra power on pmdomain: mediatek: Add support for Hardware Voter power domains pmdomain: qcom: rpmhpd: Add RPMh power domain support for Kaanapali usb: dwc3: imx8mp: Set out of band wakeup for i.MX95 usb: chipidea: ci_hdrc_imx: Set out of band wakeup for i.MX95 usb: chipidea: core: detach power domain for ci_hdrc platform device pmdomain: core: Allow power-off for out-of-band wakeup-capable devices PM: wakeup: Add out-of-band system wakeup support for devices ... 2025-11-25T18:01:29+00:00 Ulf Hansson ulf.hansson@linaro.org 2025-11-25T11:26:43+00:00 urn:sha1:8e7de6dc420979f4e4443807b71dcc8b72d8c4a9 A CPU system wakeup QoS limit may have been requested by user space. To avoid breaking this constraint when entering a low power state during s2idle through genpd, let's extend the corresponding genpd governor for CPUs. More precisely, during s2idle let the genpd governor select a suitable domain idle state, by taking into account the QoS limit. Reviewed-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com> Tested-by: Kevin Hilman (TI) <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20251125112650.329269-3-ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 2025-11-19T17:06:49+00:00 Peng Fan peng.fan@nxp.com 2025-09-22T02:21:07+00:00 urn:sha1:3b7685da41838eda57f56e804014091769a93700 Currently, if a device is configured as a system wakeup source, the PM domain core avoids powering off its power domain during system-wide suspend. However, this can lead to unnecessary power consumption, especially for devices whose wakeup logic resides in an always-on domain, i.e., devices with out-of-band wakeup capability. To address this, add a check for device_out_band_wakeup() in genpd_finish_suspend(). If the device supports out-of-band wakeup, its power domain can be safely powered off, just like regular devices without wakeup enabled. And same check in genpd_finish_resume(). This change improves power efficiency without compromising wakeup functionality. Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Dhruva Gole <d-gole@ti.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 2025-09-11T10:36:14+00:00 Ulf Hansson ulf.hansson@linaro.org 2025-09-09T11:11:20+00:00 urn:sha1:002ebddd695a53999550e241b71950f1aa0e1ac4 Recent changes to genpd prevents those PM domains being powered-on during initialization from being powered-off during the boot sequence. Based upon whether CONFIG_PM_CONFIG_PM_GENERIC_DOMAINS_OF is set of not, genpd relies on the sync_state mechanism or the genpd_power_off_unused() (which is a late_initcall_sync), to understand when it's okay to allow these PM domains to be powered-off. This new behaviour in genpd has lead to problems on different platforms. Let's therefore restore the behavior of genpd_power_off_unused(). Moreover, let's introduce GENPD_FLAG_NO_STAY_ON, to allow genpd OF providers to opt-out from the new behaviour. Link: https://lore.kernel.org/all/20250701114733.636510-1-ulf.hansson@linaro.org/ Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/all/20250902-rk3576-lockup-regression-v1-1-c4a0c9daeb00@collabora.com/ Reported-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Fixes: 0e789b491ba0 ("pmdomain: core: Leave powered-on genpds on until sync_state") Fixes: 13a4b7fb6260 ("pmdomain: core: Leave powered-on genpds on until late_initcall_sync") Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 2025-07-16T18:54:27+00:00 Hiago De Franco hiago.franco@toradex.com 2025-06-29T17:25:10+00:00 urn:sha1:09813cde376d9d8f30eaf761534532101a0a7755 This helper function returns the current power status of a given generic power domain. As example, remoteproc/imx_rproc.c can now use this function to check the power status of the remote core to properly set "attached" or "offline" modes. Suggested-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Reviewed-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Hiago De Franco <hiago.franco@toradex.com> Link: https://lore.kernel.org/r/20250629172512.14857-2-hiagofranco@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> 2025-07-09T11:29:57+00:00 Ulf Hansson ulf.hansson@linaro.org 2025-07-01T11:47:24+00:00 urn:sha1:0e789b491ba04c31de5c71249487593e386baa67 Powering-off a genpd that was on during boot, before all of its consumer devices have been probed, is certainly prone to problems. For OF based platforms we can rely on using the sync_state mechanism that the fw_devlink provides, to understand when all consumers for a genpd provider have been probed. Let's therefore prevent these genpds from being powered-off until the ->sync_state() callback gets called. Note that, for non-OF based platform we will keep relying on the late_initcall_sync, which seems to be the best we can do for now. Suggested-by: Saravana Kannan <saravanak@google.com> Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106 Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250701114733.636510-23-ulf.hansson@linaro.org 2025-07-09T11:29:53+00:00 Ulf Hansson ulf.hansson@linaro.org 2025-07-01T11:47:23+00:00 urn:sha1:13a4b7fb62600e1c0738fdb0b7176555ff05aadf Powering-off a genpd that was on during boot, before all of its consumer devices have been probed, is certainly prone to problems. As a step to improve this situation, let's prevent these genpds from being powered-off until genpd_power_off_unused() gets called, which is a late_initcall_sync(). Note that, this still doesn't guarantee that all the consumer devices has been probed before we allow to power-off the genpds. Yet, this should be a step in the right direction. Suggested-by: Saravana Kannan <saravanak@google.com> Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106 Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250701114733.636510-22-ulf.hansson@linaro.org