From: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx> [ Upstream commit f77999887235f8c378af343df11a6bcedda5b284 ] Add the necessary __acquires() and __releases() to the functions that take and release the wdt lock to avoid the following sparse warnings: drivers/watchdog/starfive-wdt.c:204:13: warning: context imbalance in 'starfive_wdt_unlock' - wrong count at exit drivers/watchdog/starfive-wdt.c:212:9: warning: context imbalance in 'starfive_wdt_lock' - unexpected unlock Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxxxxxxx> Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx> Link: https://lore.kernel.org/r/20231122085118.177589-1-ben.dooks@xxxxxxxxxxxxxxx Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> Signed-off-by: Wim Van Sebroeck <wim@xxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/watchdog/starfive-wdt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/watchdog/starfive-wdt.c b/drivers/watchdog/starfive-wdt.c index 5f501b41faf9..49b38ecc092d 100644 --- a/drivers/watchdog/starfive-wdt.c +++ b/drivers/watchdog/starfive-wdt.c @@ -202,12 +202,14 @@ static u32 starfive_wdt_ticks_to_sec(struct starfive_wdt *wdt, u32 ticks) /* Write unlock-key to unlock. Write other value to lock. */ static void starfive_wdt_unlock(struct starfive_wdt *wdt) + __acquires(&wdt->lock) { spin_lock(&wdt->lock); writel(wdt->variant->unlock_key, wdt->base + wdt->variant->unlock); } static void starfive_wdt_lock(struct starfive_wdt *wdt) + __releases(&wdt->lock) { writel(~wdt->variant->unlock_key, wdt->base + wdt->variant->unlock); spin_unlock(&wdt->lock); -- 2.43.0
