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From:   Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To:     Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>,
        Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>,
        Oded Gabbay <ogabbay@kernel.org>
Cc:     linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
        Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
        dri-devel@lists.freedesktop.org
Subject: [PATCH] accel/ivpu: Use struct_size()
Date:   Mon, 29 May 2023 15:28:04 +0200
Message-Id: <0ae53be873c27c9a8740c4fe6d8e7cd1b1224994.1685366864.git.christophe.jaillet@wanadoo.fr>
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Precedence: bulk

Use struct_size() instead of hand-writing it. It is less verbose, more
robust and more informative.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
 drivers/accel/ivpu/ivpu_job.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/accel/ivpu/ivpu_job.c b/drivers/accel/ivpu/ivpu_job.c
index 3c6f1e16cf2f..0a09bba8da24 100644
--- a/drivers/accel/ivpu/ivpu_job.c
+++ b/drivers/accel/ivpu/ivpu_job.c
@@ -289,15 +289,13 @@ ivpu_create_job(struct ivpu_file_priv *file_priv, u32 engine_idx, u32 bo_count)
 {
 	struct ivpu_device *vdev = file_priv->vdev;
 	struct ivpu_job *job;
-	size_t buf_size;
 	int ret;
 
 	ret = ivpu_rpm_get(vdev);
 	if (ret < 0)
 		return NULL;
 
-	buf_size = sizeof(*job) + bo_count * sizeof(struct ivpu_bo *);
-	job = kzalloc(buf_size, GFP_KERNEL);
+	job = kzalloc(struct_size(job, bos, bo_count), GFP_KERNEL);
 	if (!job)
 		goto err_rpm_put;
 
-- 
2.34.1