[ALSA] rawmidi: adjust runtime->avail when changing output buffer size

Modules: RawMidi Midlevel

When the output buffer size is changed, runtime->avail must be
adjusted to the new size; otherwise, draining of a bigger buffer would
appear to fail because avail does not reach buffer_size.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index e6ee0d813783ab9574630deae48ea354baf39c69..587ea1eb3197de84edc31b55f2603eb860dfbb16 100644 (file)
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -635,6 +635,7 @@ int snd_rawmidi_output_params(struct snd_rawmidi_substream *substream,
                kfree(runtime->buffer);
                runtime->buffer = newbuf;
                runtime->buffer_size = params->buffer_size;
+               runtime->avail = runtime->buffer_size;
        }
        runtime->avail_min = params->avail_min;
        substream->active_sensing = !params->no_active_sensing;