[PATCH] ALSA: cmipci: Use strscpy() in snd_cmipci_create()

[Thorsten Blum]

To prepare for removing strlcat() from the kernel [1], use strscpy()
instead with the current driver name length as the append offset. Also
use size_t in the multi-channel branch to match strlen()'s return type.

No functional change.

Link: https://github.com/KSPP/linux/issues/370 [1]
Signed-off-by: Thorsten Blum <blum@xxxxxxxxxx>
---
 sound/pci/cmipci.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/sound/pci/cmipci.c b/sound/pci/cmipci.c
index 9d9f784e3a8c..5722b722da95 100644
--- a/sound/pci/cmipci.c
+++ b/sound/pci/cmipci.c
@@ -2980,11 +2980,15 @@ static int snd_cmipci_create(struct snd_card *card, struct pci_dev *pci,
 		query_chip(cm);
 	/* added -MCx suffix for chip supporting multi-channels */
 	if (cm->can_multi_ch) {
-		int l = strlen(cm->card->driver);
+		size_t l = strlen(cm->card->driver);
+
 		scnprintf(cm->card->driver + l, sizeof(cm->card->driver) - l,
 			  "-MC%d", cm->max_channels);
-	} else if (cm->can_ac3_sw)
-		strlcat(cm->card->driver, "-SWIEC", sizeof(cm->card->driver));
+	} else if (cm->can_ac3_sw) {
+		size_t l = strlen(cm->card->driver);
+
+		strscpy(cm->card->driver + l, "-SWIEC", sizeof(cm->card->driver) - l);
+	}
 
 	cm->dig_status = SNDRV_PCM_DEFAULT_CON_SPDIF;
 	cm->dig_pcm_status = SNDRV_PCM_DEFAULT_CON_SPDIF;