linux-kernel - [PATCH v10 12/18] media: venus: helpers: fix variable dereferenced before check

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Date:   Mon, 12 Jun 2017 19:27:49 +0300
From:   Stanimir Varbanov <stanimir.varbanov@...aro.org>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>
Subject: [PATCH v10 12/18] media: venus: helpers: fix variable dereferenced before check

This fixes a warning found when building the driver with gcc7:

drivers/media/platform/qcom/venus/helpers.c:157
load_per_instance() warn: variable dereferenced before check
'inst' (see line 153)

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
---
 drivers/media/platform/qcom/venus/helpers.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
index f777ef80b941..5f4434c0a8f1 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -150,14 +150,12 @@ static int intbufs_free(struct venus_inst *inst)
 
 static u32 load_per_instance(struct venus_inst *inst)
 {
-	u32 w = inst->width;
-	u32 h = inst->height;
 	u32 mbs;
 
 	if (!inst || !(inst->state >= INST_INIT && inst->state < INST_STOP))
 		return 0;
 
-	mbs = (ALIGN(w, 16) / 16) * (ALIGN(h, 16) / 16);
+	mbs = (ALIGN(inst->width, 16) / 16) * (ALIGN(inst->height, 16) / 16);
 
 	return mbs * inst->fps;
 }
-- 
2.7.4