linux-kernel - [PATCH] ALSA: hda/ca0132: fix array

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Date:   Tue, 15 May 2018 03:02:14 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Connor McAdams <conmanx360@...il.com>
Cc:     kbuild-all@...org, alsa-devel@...a-project.org,
        Takashi Iwai <tiwai@...e.de>,
        Takashi Sakamoto <o-takashi@...amocchi.jp>,
        Jaroslav Kysela <perex@...ex.cz>,
        Jérémy Lefaure <jeremy.lefaure@....epita.fr>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] ALSA: hda/ca0132: fix array_size.cocci warnings

From: Fengguang Wu <fengguang.wu@...el.com>

sound/pci/hda/patch_ca0132.c:5062:50-51: WARNING: Use ARRAY_SIZE
sound/pci/hda/patch_ca0132.c:5092:50-51: WARNING: Use ARRAY_SIZE

 Use ARRAY_SIZE instead of dividing sizeof array with sizeof an element

Semantic patch information:
 This makes an effort to find cases where ARRAY_SIZE can be used such as
 where there is a division of sizeof the array by the sizeof its first
 element or by any indexed element or the element type. It replaces the
 division of the two sizeofs by ARRAY_SIZE.

Generated by: scripts/coccinelle/misc/array_size.cocci

Fixes: 47cdf76e44e8 ("ALSA: hda/ca0132: Add new control changes for SBZ + R3Di")
CC: Connor McAdams <conmanx360@...il.com>
Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---

 patch_ca0132.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/sound/pci/hda/patch_ca0132.c
+++ b/sound/pci/hda/patch_ca0132.c
@@ -5059,8 +5059,7 @@ static int ca0132_alt_svm_setting_put(st
 static int ca0132_alt_eq_preset_info(struct snd_kcontrol *kcontrol,
 				 struct snd_ctl_elem_info *uinfo)
 {
-	unsigned int items = sizeof(ca0132_alt_eq_presets)
-				/ sizeof(struct ct_eq_preset);
+	unsigned int items = ARRAY_SIZE(ca0132_alt_eq_presets);
 
 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 	uinfo->count = 1;
@@ -5089,8 +5088,7 @@ static int ca0132_alt_eq_preset_put(stru
 	struct ca0132_spec *spec = codec->spec;
 	int i, err = 0;
 	int sel = ucontrol->value.enumerated.item[0];
-	unsigned int items = sizeof(ca0132_alt_eq_presets)
-				/ sizeof(struct ct_eq_preset);
+	unsigned int items = ARRAY_SIZE(ca0132_alt_eq_presets);
 
 	if (sel >= items)
 		return 0;