[PATCH linux-next] ASoC: use sysfs_emit() instead of scnprintf().

[<xie.ludan@xxxxxxxxxx>]

From: XieLudan <xie.ludan@xxxxxxxxxx>

Follow the advice in Documentation/filesystems/sysfs.rst:

show() should only use sysfs_emit() or sysfs_emit_at() when formatting

the value to be returned to user space.

Signed-off-by: XieLudan <xie.ludan@xxxxxxxxxx>

---

 sound/soc/fsl/imx-audmux.c | 26 +++++++++++---------------

 1 file changed, 11 insertions(+), 15 deletions(-)

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c

index cc2918ee2cf5..6062503d3543 100644

--- a/sound/soc/fsl/imx-audmux.c

+++ b/sound/soc/fsl/imx-audmux.c

@@ -77,45 +77,41 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,

  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,

+ ret += sysfs_emit(buf + ret,

  "TxFS output from %s, ",

  audmux_port_string((ptcr >> 27) & 0x7));

  else

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

+ ret += sysfs_emit(buf + ret,

  "TxFS input, ");

 

  if (ptcr & IMX_AUDMUX_V2_PTCR_TCLKDIR)

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

+ ret += sysfs_emit(buf + ret,

  "TxClk output from %s",

  audmux_port_string((ptcr >> 22) & 0x7));

  else

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

- "TxClk input");

+ ret += sysfs_emit(buf + ret, "TxClk input");

 

- ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");

+ ret += sysfs_emit(buf + ret, "\n");

 

  if (ptcr & IMX_AUDMUX_V2_PTCR_SYN) {

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

- "Port is symmetric");

+ ret += sysfs_emit(buf + ret, "Port is symmetric");

  } else {

  if (ptcr & IMX_AUDMUX_V2_PTCR_RFSDIR)

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

+ ret += sysfs_emit(buf + ret,

  "RxFS output from %s, ",

  audmux_port_string((ptcr >> 17) & 0x7));

  else

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

- "RxFS input, ");

+ ret += sysfs_emit(buf + ret, "RxFS input, ");

 

  if (ptcr & IMX_AUDMUX_V2_PTCR_RCLKDIR)

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

+ ret += sysfs_emit(buf + ret,

  "RxClk output from %s",

  audmux_port_string((ptcr >> 12) & 0x7));

  else

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

- "RxClk input");

+ ret += sysfs_emit(buf + ret, "RxClk input");

  }

 

- ret += scnprintf(buf + ret, PAGE_SIZE - ret,

+ ret += sysfs_emit(buf + ret,

  "\nData received from %s\n",

  audmux_port_string((pdcr >> 13) & 0x7));

 

-- 

2.25.1