linux-kernel - [PATCH] ASoC: imx-audmux: use sysfs

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Message-ID: <202212051943476482106@zte.com.cn>
Date:   Mon, 5 Dec 2022 19:43:47 +0800 (CST)
From:   <ye.xingchen@....com.cn>
To:     <broonie@...nel.org>
Cc:     <shengjiu.wang@...il.com>, <xiubo.lee@...il.com>,
        <festevam@...il.com>, <nicoleotsuka@...il.com>,
        <lgirdwood@...il.com>, <perex@...ex.cz>, <tiwai@...e.com>,
        <shawnguo@...nel.org>, <s.hauer@...gutronix.de>,
        <kernel@...gutronix.de>, <linux-imx@....com>,
        <alsa-devel@...a-project.org>, <linuxppc-dev@...ts.ozlabs.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] ASoC: imx-audmux: use sysfs_emit() to instead of scnprintf()

From: ye xingchen <ye.xingchen@....com.cn>

Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.

Signed-off-by: ye xingchen <ye.xingchen@....com.cn>
---
 sound/soc/fsl/imx-audmux.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index 50b71e5d4589..582f1e2431ee 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -75,8 +75,7 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
 	if (!buf)
 		return -ENOMEM;

-	ret = scnprintf(buf, PAGE_SIZE, "PDCR: %08x\nPTCR: %08x\n",
-		       pdcr, ptcr);
+	ret = sysfs_emit(buf, "PDCR: %08x\nPTCR: %08x\n", pdcr, ptcr);

 	if (ptcr & IMX_AUDMUX_V2_PTCR_TFSDIR)
 		ret += scnprintf(buf + ret, PAGE_SIZE - ret,
-- 
2.25.1