Claude review: drm/bridge: samsung-dsim: fix TE GPIO ownership

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Overall Series Review

Subject: drm/bridge: samsung-dsim: fix TE GPIO ownership
Author: Guangshuo Li <lgs201920130244@gmail.com>
Patches: 1
Reviewed: 2026-06-05T06:32:39.803290

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This is a single-patch fix for a real resource management bug in the Samsung DSIM bridge driver. The analysis in the commit message is correct: `devm_gpiod_get_optional()` registers a devres cleanup action that will call `gpiod_put()` automatically on device detach, but the driver also manually calls `gpiod_put()` in both the error path of `samsung_dsim_register_te_irq()` and in `samsung_dsim_unregister_te_irq()`. This results in a double-free of the GPIO descriptor — once via the manual `gpiod_put()` and again when devres runs during device detach.

The fix is correct and minimal: switch to non-managed `gpiod_get_optional()` so that the manual `gpiod_put()` calls are the sole owners of the descriptor's lifetime. The addition of `dsi->te_gpio = NULL` after each `gpiod_put()` is a good defensive practice.

**Verdict: Looks good. Correct fix for a genuine double-free bug.**

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