watchdog: wdat_wdt: Fix ACPI table leak in probe function

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[ Upstream commit 25c0b472ea ]

wdat_wdt_probe() calls acpi_get_table() to obtain the WDAT ACPI table but
never calls acpi_put_table() on any paths. This causes a permanent ACPI
table memory leak.

Add a single cleanup path which calls acpi_put_table() to ensure
the ACPI table is always released.

Fixes: 058dfc7670 ("ACPI / watchdog: Add support for WDAT hardware watchdog")
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Haotian Zhang 2025-11-13 10:30:32 +08:00 • committed by Greg Kroah-Hartman

parent dbe2bb24ac

commit dbeddfaaa3

1 changed files with 43 additions and 21 deletions

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drivers/watchdog/wdat_wdt.c

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