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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Hulk Robot <hulkci@huawei.com>,
        Zhen Lei <thunder.leizhen@huawei.com>,
        Stanimir Varbanov <stanimir.varbanov@linaro.org>,
        Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.14 161/334] media: venus: hfi: fix return value check in sys_get_prop_image_version()
Date:   Mon, 13 Sep 2021 15:13:35 +0200
Message-Id: <20210913131118.792169763@linuxfoundation.org>
In-Reply-To: <20210913131113.390368911@linuxfoundation.org>
References: <20210913131113.390368911@linuxfoundation.org>
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From: Zhen Lei <thunder.leizhen@huawei.com>

[ Upstream commit 331e06bbde5856059b7a6bb183f12878ed4decb1 ]

In case of error, the function qcom_smem_get() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check
should be replaced with IS_ERR().

Fixes: d566e78dd6af ("media: venus : hfi: add venus image info into smem")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/media/platform/qcom/venus/hfi_msgs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/venus/hfi_msgs.c b/drivers/media/platform/qcom/venus/hfi_msgs.c
index d9fde66f6fa8..9a2bdb002edc 100644
--- a/drivers/media/platform/qcom/venus/hfi_msgs.c
+++ b/drivers/media/platform/qcom/venus/hfi_msgs.c
@@ -261,7 +261,7 @@ sys_get_prop_image_version(struct device *dev,
 
 	smem_tbl_ptr = qcom_smem_get(QCOM_SMEM_HOST_ANY,
 		SMEM_IMG_VER_TBL, &smem_blk_sz);
-	if (smem_tbl_ptr && smem_blk_sz >= SMEM_IMG_OFFSET_VENUS + VER_STR_SZ)
+	if (!IS_ERR(smem_tbl_ptr) && smem_blk_sz >= SMEM_IMG_OFFSET_VENUS + VER_STR_SZ)
 		memcpy(smem_tbl_ptr + SMEM_IMG_OFFSET_VENUS,
 		       img_ver, VER_STR_SZ);
 }
-- 
2.30.2