linux-kernel - [PATCH] drm/amdkfd: Use ARRAY_SIZE macro in kfd_build_sysfs_node

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Date:   Thu, 18 Jan 2018 18:39:55 -0600
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Oded Gabbay <oded.gabbay@...il.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>
Cc:     dri-devel@...ts.freedesktop.org, amd-gfx@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] drm/amdkfd: Use ARRAY_SIZE macro in
 kfd_build_sysfs_node_entry

Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
index c6a7609..7783250 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_topology.c
@@ -677,7 +677,7 @@ static int kfd_build_sysfs_node_entry(struct kfd_topology_device *dev,
 	}
 
 	/* All hardware blocks have the same number of attributes. */
-	num_attrs = sizeof(perf_attr_iommu)/sizeof(struct kfd_perf_attr);
+	num_attrs = ARRAY_SIZE(perf_attr_iommu);
 	list_for_each_entry(perf, &dev->perf_props, list) {
 		perf->attr_group = kzalloc(sizeof(struct kfd_perf_attr)
 			* num_attrs + sizeof(struct attribute_group),
-- 
2.7.4