ALSA: pcm: playback silence - remove extra code

The removed condition handles de facto only one situation where
runtime->silence_filled variable is equal to runtime->buffer_size,
because this variable cannot go over the buffer size. This case is
implicitly caught by the required comparison of the noise distance
with the threshold.

Suggested-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230505155244.2312199-4-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: perexg

sound/core/pcm_lib.c

@@ -61,8 +61,6 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram
 				runtime->silence_filled = 0;
 			runtime->silence_start = appl_ptr;
 		}
-		if (runtime->silence_filled >= runtime->buffer_size)
-			return;
 		/* initialization outside pointer updates */
 		if (new_hw_ptr == ULONG_MAX)
 			new_hw_ptr = runtime->status->hw_ptr;