Messages in this thread Patch in this message | | | From | Ben Dooks <> | Subject | [PATCH] watchdog: starfive: add lock annotations to fix context imbalances | Date | Wed, 22 Nov 2023 08:51:18 +0000 |
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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@codethink.co.uk> --- 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); -- 2.37.2.352.g3c44437643
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