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51 lines
1.4 KiB
51 lines
1.4 KiB
6 years ago
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From a845f23bddcb2b0e48e8158bb06b0990c4760e7e Mon Sep 17 00:00:00 2001
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From: Giedrius <giedrius@blokas.io>
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Date: Fri, 16 Mar 2018 18:14:31 +0200
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Subject: [PATCH 254/454] Fix for Pisound's MIDI Input getting blocked for a
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while in rare cases.
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There was a possible race condition which could lead to Input's FIFO queue
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to be underflown, causing high amount of processing in the worker thread for
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some period of time.
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Signed-off-by: Giedrius Trainavicius <giedrius@blokas.io>
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---
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sound/soc/bcm/pisound.c | 12 +++++++-----
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1 file changed, 7 insertions(+), 5 deletions(-)
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--- a/sound/soc/bcm/pisound.c
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+++ b/sound/soc/bcm/pisound.c
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@@ -56,6 +56,12 @@ static const char *pisnd_spi_get_version
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static int pisnd_midi_init(struct snd_card *card);
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static void pisnd_midi_uninit(void);
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+enum task_e {
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+ TASK_PROCESS = 0,
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+};
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+
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+static void pisnd_schedule_process(enum task_e task);
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+
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#define PISOUND_LOG_PREFIX "pisound: "
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#ifdef PISOUND_DEBUG
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@@ -129,7 +135,7 @@ static void pisnd_input_trigger(struct s
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{
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if (up) {
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pisnd_spi_set_callback(pisnd_midi_recv_callback, substream);
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- pisnd_midi_recv_callback(substream);
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+ pisnd_schedule_process(TASK_PROCESS);
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} else {
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pisnd_spi_set_callback(NULL, NULL);
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}
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@@ -258,10 +264,6 @@ static bool pisnd_spi_has_more(void)
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return gpiod_get_value(data_available);
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}
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-enum task_e {
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- TASK_PROCESS = 0,
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-};
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-
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static void pisnd_schedule_process(enum task_e task)
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{
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if (pisnd_spi_device != NULL &&
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