From 1e28dfdf40d7293882ba7eb70a3bc0e9ab625377 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 20 Apr 2023 18:02:11 +0300 Subject: counter: rz-mtu3-cnt: Unlock on error in rz_mtu3_count_ceiling_write() These error paths need to call mutex_unlock(&priv->lock) before returning. The lock is taken in rz_mtu3_lock_if_counter_is_valid(). Fixes: 25d21447d896 ("counter: Add Renesas RZ/G2L MTU3a counter driver") Signed-off-by: Dan Carpenter Acked-by: William Breathitt Gray Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/7b535d6b-6031-493a-84f6-82842089e637@kili.mountain --- drivers/counter/rz-mtu3-cnt.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers/counter') diff --git a/drivers/counter/rz-mtu3-cnt.c b/drivers/counter/rz-mtu3-cnt.c index a371bab68499..48c83933aa2f 100644 --- a/drivers/counter/rz-mtu3-cnt.c +++ b/drivers/counter/rz-mtu3-cnt.c @@ -358,13 +358,17 @@ static int rz_mtu3_count_ceiling_write(struct counter_device *counter, switch (count->id) { case RZ_MTU3_16_BIT_MTU1_CH: case RZ_MTU3_16_BIT_MTU2_CH: - if (ceiling > U16_MAX) + if (ceiling > U16_MAX) { + mutex_unlock(&priv->lock); return -ERANGE; + } priv->mtu_16bit_max[ch_id] = ceiling; break; case RZ_MTU3_32_BIT_CH: - if (ceiling > U32_MAX) + if (ceiling > U32_MAX) { + mutex_unlock(&priv->lock); return -ERANGE; + } priv->mtu_32bit_max = ceiling; break; default: -- cgit v1.2.3