rust: pwm: Fix potential memory leak on init error

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When initializing a PWM chip using pwmchip_alloc(), the allocated device
owns an initial reference that must be released on all error paths.

If __pinned_init() were to fail, the allocated pwm_chip would currently
leak because the error path returns without calling pwmchip_put().

Fixes: 7b3dce814a ("rust: pwm: Add Kconfig and basic data structures")
Signed-off-by: Kari Argillander <kari.argillander@gmail.com>
Acked-by: Michal Wilczynski <m.wilczynski@samsung.com>
Link: https://patch.msgid.link/20260102-pwm-rust-v2-1-2702ce57d571@gmail.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>

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Kari Argillander 2026-01-02 09:51:41 +02:00 • committed by Uwe Kleine-König

parent b0dc6c6e97

commit a2633dc243

1 changed files with 5 additions and 1 deletions

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rust/kernel/pwm.rs

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