[PATCH 6.12.y] hte: tegra194-test: shut down timer before GPIO release

[Sasha Levin <sashal@kernel.org>]

From: Runyu Xiao <runyu.xiao@seu.edu.cn>

[ Upstream commit 30167fadbf87fa901a2fee49c30a5c5a506a43e8 ]

tegra_hte_test_remove() releases GPIO descriptors before stopping
hte.timer. gpio_timer_cb() accesses hte.gpio_out and rearms the timer, so
a callback concurrent with remove can use a released descriptor and rearm
after teardown.

Shut down the timer before releasing the GPIO descriptors.
timer_shutdown_sync() waits for a running callback and prevents it from
being rearmed.

Fixes: 9a75a7cd03c9 ("hte: Add Tegra HTE test driver")
Cc: stable@vger.kernel.org
Assisted-by: Codex:GPT-5
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Acked-by: Dipen Patel <dipenp@nvidia.com>
Signed-off-by: Dipen Patel <dipenp@nvidia.com>
[ sashal: Adjusted the deleted call from timer_delete_sync() to del_timer_sync() to match the existing API name. ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/hte/hte-tegra194-test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hte/hte-tegra194-test.c b/drivers/hte/hte-tegra194-test.c
index df631b5100d23..0bec696774c17 100644
--- a/drivers/hte/hte-tegra194-test.c
+++ b/drivers/hte/hte-tegra194-test.c
@@ -218,10 +218,10 @@ static void tegra_hte_test_remove(struct platform_device *pdev)
 {
 	(void)pdev;
 
+	timer_shutdown_sync(&hte.timer);
 	free_irq(hte.gpio_in_irq, &hte);
 	gpiod_put(hte.gpio_in);
 	gpiod_put(hte.gpio_out);
-	del_timer_sync(&hte.timer);
 }
 
 static struct platform_driver tegra_hte_test_driver = {
-- 
2.53.0