linux-kernel - [PATCH] drm/via: use ARRAY

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Date:   Sun, 15 Oct 2017 22:33:56 -0400
From:   Jérémy Lefaure 
        <jeremy.lefaure@....epita.fr>
To:     David Airlie <airlied@...ux.ie>
Cc:     Thierry Reding <treding@...dia.com>,
        Jérémy Lefaure 
        <jeremy.lefaure@....epita.fr>, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/via: use ARRAY_SIZE

Using the ARRAY_SIZE macro improves the readability of the code.

Found with Coccinelle with the following semantic patch:
@r depends on (org || report)@
type T;
T[] E;
position p;
@@
(
 (sizeof(E)@p /sizeof(*E))
|
 (sizeof(E)@p /sizeof(E[...]))
|
 (sizeof(E)@p /sizeof(T))
)

Reviewed-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@....epita.fr>
---
This patch was part of a bigger patch [1] reviewed by Thierry Reding
before it was split in several patches.

[1]: https://patchwork.kernel.org/patch/9979843/

 drivers/gpu/drm/via/via_verifier.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/via/via_verifier.c b/drivers/gpu/drm/via/via_verifier.c
index 0677bbf4ec7e..fb2609434df7 100644
--- a/drivers/gpu/drm/via/via_verifier.c
+++ b/drivers/gpu/drm/via/via_verifier.c
@@ -34,6 +34,7 @@
 #include <drm/drm_legacy.h>
 #include "via_verifier.h"
 #include "via_drv.h"
+#include <linux/kernel.h>
 
 typedef enum {
 	state_command,
@@ -1102,10 +1103,7 @@ setup_hazard_table(hz_init_t init_table[], hazard_t table[], int size)
 
 void via_init_command_verifier(void)
 {
-	setup_hazard_table(init_table1, table1,
-			   sizeof(init_table1) / sizeof(hz_init_t));
-	setup_hazard_table(init_table2, table2,
-			   sizeof(init_table2) / sizeof(hz_init_t));
-	setup_hazard_table(init_table3, table3,
-			   sizeof(init_table3) / sizeof(hz_init_t));
+	setup_hazard_table(init_table1, table1, ARRAY_SIZE(init_table1));
+	setup_hazard_table(init_table2, table2, ARRAY_SIZE(init_table2));
+	setup_hazard_table(init_table3, table3, ARRAY_SIZE(init_table3));
 }
-- 
2.14.2