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Subject[PATCH] watchdog: starfive: add lock annotations to fix context imbalances
Date
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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