[PATCH] ALSA: hda/hdmi: Limit the maximal count of PCM devices to 8

[PATCH] ALSA: hda/hdmi: Limit the maximal count of PCM devices to 8

[Jaroslav Kysela]

The current hardware has up to 4 converters. Save little space.
The limit 8 is enough even for a more improved hardware.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
 sound/pci/hda/patch_hdmi.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index ac520c62ee70..d90c9286ac6d 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -151,7 +151,7 @@ struct hdmi_spec {
 	 */
 	int dev_num;
 	struct snd_array pins; /* struct hdmi_spec_per_pin */
-	struct hdmi_pcm pcm_rec[16];
+	struct hdmi_pcm pcm_rec[8];
 	struct mutex pcm_lock;
 	struct mutex bind_lock; /* for audio component binding */
 	/* pcm_bitmap means which pcms have been assigned to pins*/
@@ -2288,8 +2288,8 @@ static int generic_hdmi_build_pcms(struct hda_codec *codec)
 		pstr = &info->stream[SNDRV_PCM_STREAM_PLAYBACK];
 		pstr->substreams = 1;
 		pstr->ops = generic_ops;
-		/* pcm number is less than 16 */
-		if (spec->pcm_used >= 16)
+		/* pcm number is less than pcm_rec array size */
+		if (spec->pcm_used >= ARRAY_SIZE(spec->pcm_rec))
 			break;
 		/* other pstr fields are set in open */
 	}
-- 
2.35.3

Re: [PATCH] ALSA: hda/hdmi: Limit the maximal count of PCM devices to 8

[Takashi Iwai]

On Fri, 23 Sep 2022 10:22:36 +0200,
Jaroslav Kysela wrote:
> 
> The current hardware has up to 4 converters. Save little space.
> The limit 8 is enough even for a more improved hardware.
> 
> Signed-off-by: Jaroslav Kysela <perex@perex.cz>

Thanks, applied.


Takashi