6.12-stable review patch. If anyone has any objections, please let me know.
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From: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com
[ Upstream commit b49825661af93d9b8d7236f914803f136896f8fd ]
When running the probe function for this driver, the function lvts_debugfs_init() gets called in lvts_domain_init() which, in turn, gets called in lvts_probe() before registering threaded interrupt handlers.
Even though it's unlikely, the last call may fail and, if it does, there's nothing removing the already created debugfs folder and files.
In order to fix that, instead of calling the lvts debugfs cleanup function upon failure, register a devm action that will take care of calling that upon failure or driver removal.
Since devm was used, also delete the call to lvts_debugfs_exit() in the lvts_remove() callback, as now that's done automatically.
Fixes: f5f633b18234 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver") Signed-off-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Reviewed-by: Chen-Yu Tsai wenst@chromium.org Link: https://lore.kernel.org/r/20250402083852.20624-1-angelogioacchino.delregno@c... Signed-off-by: Daniel Lezcano daniel.lezcano@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/thermal/mediatek/lvts_thermal.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c index 3295b27ab70d2..944c28a0c4736 100644 --- a/drivers/thermal/mediatek/lvts_thermal.c +++ b/drivers/thermal/mediatek/lvts_thermal.c @@ -209,6 +209,13 @@ static const struct debugfs_reg32 lvts_regs[] = { LVTS_DEBUG_FS_REGS(LVTS_CLKEN), };
+static void lvts_debugfs_exit(void *data) +{ + struct lvts_domain *lvts_td = data; + + debugfs_remove_recursive(lvts_td->dom_dentry); +} + static int lvts_debugfs_init(struct device *dev, struct lvts_domain *lvts_td) { struct debugfs_regset32 *regset; @@ -241,12 +248,7 @@ static int lvts_debugfs_init(struct device *dev, struct lvts_domain *lvts_td) debugfs_create_regset32("registers", 0400, dentry, regset); }
- return 0; -} - -static void lvts_debugfs_exit(struct lvts_domain *lvts_td) -{ - debugfs_remove_recursive(lvts_td->dom_dentry); + return devm_add_action_or_reset(dev, lvts_debugfs_exit, lvts_td); }
#else @@ -1352,8 +1354,6 @@ static void lvts_remove(struct platform_device *pdev)
for (i = 0; i < lvts_td->num_lvts_ctrl; i++) lvts_ctrl_set_enable(&lvts_td->lvts_ctrl[i], false); - - lvts_debugfs_exit(lvts_td); }
static const struct lvts_ctrl_data mt7988_lvts_ap_data_ctrl[] = {