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linux/drivers/cpuidle
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Javier Carrasco 0ea7a3e442 cpuidle: riscv-sbi: fix device node release in early exit of for_each_possible_cpu 
[ Upstream commit 7e25044b80 ]

The 'np' device_node is initialized via of_cpu_device_node_get(), which
requires explicit calls to of_node_put() when it is no longer required
to avoid leaking the resource.

Instead of adding the missing calls to of_node_put() in all execution
paths, use the cleanup attribute for 'np' by means of the __free()
macro, which automatically calls of_node_put() when the variable goes
out of scope. Given that 'np' is only used within the
for_each_possible_cpu(), reduce its scope to release the nood after
every iteration of the loop.

Fixes: 6abf32f1d9 ("cpuidle: Add RISC-V SBI CPU idle driver")
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20241116-cpuidle-riscv-sbi-cleanup-v3-1-a3a46372ce08@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-01-17 13:40:44 +01:00
..
governors cpuidle: teo: Don't count non-existent intercepts 2024-07-01 18:58:55 +02:00
coupled.c cpuidle: Avoid explicit cpumask allocation on stack 2024-04-24 21:23:49 +02:00
cpuidle-arm.c cpuidle, arch: Mark all ct_cpuidle_enter() callers __cpuidle 2023-01-13 11:48:17 +01:00
cpuidle-at91.c treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_56.RULE (part 2) 2022-06-10 14:51:35 +02:00
cpuidle-big_little.c cpuidle, arch: Mark all ct_cpuidle_enter() callers __cpuidle 2023-01-13 11:48:17 +01:00
cpuidle-calxeda.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
cpuidle-clps711x.c cpuidle: clps711x: convert to devm_platform_ioremap_resource() 2019-12-20 10:04:27 +01:00
cpuidle-cps.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
cpuidle-exynos.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
cpuidle-haltpoll.c cpuidle: haltpoll: add missing MODULE_DESCRIPTION() macro 2024-06-14 18:15:38 +02:00
cpuidle-kirkwood.c cpuidle: kirkwood: Convert to platform remove callback returning void 2024-04-23 09:21:48 +02:00
cpuidle-mvebu-v7.c cpuidle: mvebu: Fix duplicate flags assignment 2023-01-18 12:03:54 +01:00
cpuidle-powernv.c powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state 2022-12-06 23:18:19 +11:00
cpuidle-psci-domain.c cpuidle: psci: Simplify with scoped for each OF child loop 2024-08-20 11:30:39 +02:00
cpuidle-psci.c cpuidle: psci: Enable the hierarchical topology for s2idle on PREEMPT_RT 2024-08-05 13:25:45 +02:00
cpuidle-psci.h cpuidle: psci: Drop superfluous wrappers psci_dt_attach|detach_cpu() 2024-04-04 13:00:39 +02:00
cpuidle-pseries.c powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT 2023-08-24 22:33:17 +10:00
cpuidle-qcom-spm.c cpuidle: Adjust includes to remove of_device.h 2023-04-13 17:46:35 -05:00
cpuidle-riscv-sbi.c cpuidle: riscv-sbi: fix device node release in early exit of for_each_possible_cpu 2025-01-17 13:40:44 +01:00
cpuidle-tegra.c cpuidle, arch: Mark all ct_cpuidle_enter() callers __cpuidle 2023-01-13 11:48:17 +01:00
cpuidle-ux500.c mfd/cpuidle: ux500: Rename driver symbol 2021-08-16 13:42:34 +01:00
cpuidle-zynq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
cpuidle.c cpuidle: remove dead code from cpuidle_enter_state() 2024-08-22 21:03:52 +02:00
cpuidle.h cpuidle: move to use bus_get_dev_root() 2023-03-22 20:25:23 +01:00
driver.c cpuidle: Avoid potential overflow in integer multiplication 2024-02-12 17:07:49 +01:00
dt_idle_genpd.c cpuidle: dt_idle_genpd: Simplify with scoped for each OF child loop 2024-08-20 11:30:39 +02:00
dt_idle_genpd.h cpuidle: dt_idle_genpd: Add helper function to remove genpd topology 2023-08-08 16:06:20 +02:00
dt_idle_states.c cpuidle: dt: Replace deprecated strncpy() with strscpy() 2023-09-29 14:48:31 -07:00
dt_idle_states.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
governor.c cpuidle: Remove redundant check in cpuidle_switch_governor() 2022-09-03 20:14:51 +02:00
Kconfig cpuidle-haltpoll: select haltpoll governor 2023-01-13 20:50:46 +01:00
Kconfig.arm cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT 2023-02-13 17:15:42 +01:00
Kconfig.mips treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.powerpc treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Kconfig.riscv cpuidle: Add RISC-V SBI CPU idle driver 2022-03-10 09:29:51 -08:00
Makefile cpuidle: Add RISC-V SBI CPU idle driver 2022-03-10 09:29:51 -08:00
poll_state.c cpuidle: Use local_clock_noinstr() 2023-06-05 21:11:09 +02:00
sysfs.c cpuidle: move to use bus_get_dev_root() 2023-03-22 20:25:23 +01:00