linux-kernel - [PATCH v3 -next] staging: vc04_services: fix unused-but-set-variable warning

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Date:   Sat, 27 Jul 2019 09:35:24 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <eric@...olt.net>, <wahrenst@....net>,
        <gregkh@...uxfoundation.org>, <inf.braun@....de>,
        <nishkadg.linux@...il.com>
CC:     <linux-kernel@...r.kernel.org>, <devel@...verdev.osuosl.org>,
        <linux-rpi-kernel@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <bcm-kernel-feedback-list@...adcom.com>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH v3 -next] staging: vc04_services: fix unused-but-set-variable warning

Fix gcc used-but-set-variable warning:

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c: In function vchiq_release_internal:
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:2827:16: warning:
 variable local_entity_uc set but not used [-Wunused-but-set-variable]
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c:2827:6: warning:
 variable local_uc set but not used [-Wunused-but-set-variable]

Remove the unused variables 'local_entity_uc' and 'local_uc'

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
Acked-by: Stefan Wahren <wahrenst@....net>
---
v3: fix patch title
v2: remove the unused variable
---
 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index cc4383d..b1595b1 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -2824,7 +2824,6 @@ vchiq_release_internal(struct vchiq_state *state, struct vchiq_service *service)
 	VCHIQ_STATUS_T ret = VCHIQ_SUCCESS;
 	char entity[16];
 	int *entity_uc;
-	int local_uc, local_entity_uc;
 
 	if (!arm_state)
 		goto out;
@@ -2849,8 +2848,8 @@ vchiq_release_internal(struct vchiq_state *state, struct vchiq_service *service)
 		ret = VCHIQ_ERROR;
 		goto unlock;
 	}
-	local_uc = --arm_state->videocore_use_count;
-	local_entity_uc = --(*entity_uc);
+	--arm_state->videocore_use_count;
+	--(*entity_uc);
 
 	if (!vchiq_videocore_wanted(state)) {
 		if (vchiq_platform_use_suspend_timer() &&
-- 
2.7.4