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Subject[PATCH] drm/gma500: use ARRAY_SIZE
Date
Using the ARRAY_SIZE macro improves the readability of the code. Also,
it is useless to re-invent it.

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@nvidia.com>
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.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/gma500/psb_intel_sdvo.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
index e787d376ba67..84507912be84 100644
--- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
+++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
@@ -37,6 +37,7 @@
#include "psb_drv.h"
#include "psb_intel_sdvo_regs.h"
#include "psb_intel_reg.h"
+#include <linux/kernel.h>

#define SDVO_TMDS_MASK (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_TMDS1)
#define SDVO_RGB_MASK (SDVO_OUTPUT_RGB0 | SDVO_OUTPUT_RGB1)
@@ -62,8 +63,6 @@ static const char *tv_format_names[] = {
"SECAM_60"
};

-#define TV_FORMAT_NUM (sizeof(tv_format_names) / sizeof(*tv_format_names))
-
struct psb_intel_sdvo {
struct gma_encoder base;

@@ -148,7 +147,7 @@ struct psb_intel_sdvo_connector {
int force_audio;

/* This contains all current supported TV format */
- u8 tv_format_supported[TV_FORMAT_NUM];
+ u8 tv_format_supported[ARRAY_SIZE(tv_format_names)];
int format_supported_num;
struct drm_property *tv_format;

@@ -1709,7 +1708,7 @@ psb_intel_sdvo_set_property(struct drm_connector *connector,
}

if (property == psb_intel_sdvo_connector->tv_format) {
- if (val >= TV_FORMAT_NUM)
+ if (val >= ARRAY_SIZE(tv_format_names))
return -EINVAL;

if (psb_intel_sdvo->tv_format_index ==
@@ -2269,7 +2268,7 @@ static bool psb_intel_sdvo_tv_create_property(struct psb_intel_sdvo *psb_intel_s
return false;

psb_intel_sdvo_connector->format_supported_num = 0;
- for (i = 0 ; i < TV_FORMAT_NUM; i++)
+ for (i = 0 ; i < ARRAY_SIZE(tv_format_names); i++)
if (format_map & (1 << i))
psb_intel_sdvo_connector->tv_format_supported[psb_intel_sdvo_connector->format_supported_num++] = i;

--
2.14.2
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