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Date:   Wed, 25 Oct 2017 08:09:27 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     Jaroslav Kysela <perex@...ex.cz>, Bard Liao <bardliao@...ltek.com>,
        Oder Chiou <oder_chiou@...ltek.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Jarkko Nikula <jarkko.nikula@...mer.com>,
        Takashi Sakamoto <o-takashi@...amocchi.jp>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: [PATCH] sound: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list
pointer to all timer callbacks, switch to using the new timer_setup()
and from_timer() to pass the timer pointer explicitly. These are all the
"mechanical" changes remaining in the sound subsystem.

Cc: Jaroslav Kysela <perex@...ex.cz>
Cc: Takashi Iwai <tiwai@...e.com>
Cc: Bard Liao <bardliao@...ltek.com>
Cc: Oder Chiou <oder_chiou@...ltek.com>
Cc: Liam Girdwood <lgirdwood@...il.com>
Cc: Mark Brown <broonie@...nel.org>
Cc: Peter Ujfalusi <peter.ujfalusi@...com>
Cc: Jarkko Nikula <jarkko.nikula@...mer.com>
Cc: Takashi Sakamoto <o-takashi@...amocchi.jp>
Cc: alsa-devel@...a-project.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 sound/i2c/other/ak4117.c      |  8 ++++----
 sound/pci/ctxfi/cttimer.c     |  7 +++----
 sound/pci/echoaudio/midi.c    | 10 +++++-----
 sound/pci/korg1212/korg1212.c |  7 +++----
 sound/pci/rme9652/hdsp.c      |  8 ++++----
 sound/pci/rme9652/hdspm.c     |  8 ++++----
 sound/soc/codecs/rt5645.c     |  7 +++----
 sound/soc/omap/ams-delta.c    |  4 ++--
 8 files changed, 28 insertions(+), 31 deletions(-)

diff --git a/sound/i2c/other/ak4117.c b/sound/i2c/other/ak4117.c
index 3ab099fb8c15..b923342cadf4 100644
--- a/sound/i2c/other/ak4117.c
+++ b/sound/i2c/other/ak4117.c
@@ -35,7 +35,7 @@ MODULE_LICENSE("GPL");
 
 #define AK4117_ADDR			0x00 /* fixed address */
 
-static void snd_ak4117_timer(unsigned long data);
+static void snd_ak4117_timer(struct timer_list *t);
 
 static void reg_write(struct ak4117 *ak4117, unsigned char reg, unsigned char val)
 {
@@ -91,7 +91,7 @@ int snd_ak4117_create(struct snd_card *card, ak4117_read_t *read, ak4117_write_t
 	chip->read = read;
 	chip->write = write;
 	chip->private_data = private_data;
-	setup_timer(&chip->timer, snd_ak4117_timer, (unsigned long)chip);
+	timer_setup(&chip->timer, snd_ak4117_timer, 0);
 
 	for (reg = 0; reg < 5; reg++)
 		chip->regmap[reg] = pgm[reg];
@@ -529,9 +529,9 @@ int snd_ak4117_check_rate_and_errors(struct ak4117 *ak4117, unsigned int flags)
 	return res;
 }
 
-static void snd_ak4117_timer(unsigned long data)
+static void snd_ak4117_timer(struct timer_list *t)
 {
-	struct ak4117 *chip = (struct ak4117 *)data;
+	struct ak4117 *chip = from_timer(chip, t, timer);
 
 	if (chip->init)
 		return;
diff --git a/sound/pci/ctxfi/cttimer.c b/sound/pci/ctxfi/cttimer.c
index 8f945341720b..08e874e9a7f6 100644
--- a/sound/pci/ctxfi/cttimer.c
+++ b/sound/pci/ctxfi/cttimer.c
@@ -63,9 +63,9 @@ struct ct_timer {
  * system-timer-based updates
  */
 
-static void ct_systimer_callback(unsigned long data)
+static void ct_systimer_callback(struct timer_list *t)
 {
-	struct ct_timer_instance *ti = (struct ct_timer_instance *)data;
+	struct ct_timer_instance *ti = from_timer(ti, t, timer);
 	struct snd_pcm_substream *substream = ti->substream;
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct ct_atc_pcm *apcm = ti->apcm;
@@ -93,8 +93,7 @@ static void ct_systimer_callback(unsigned long data)
 
 static void ct_systimer_init(struct ct_timer_instance *ti)
 {
-	setup_timer(&ti->timer, ct_systimer_callback,
-		    (unsigned long)ti);
+	timer_setup(&ti->timer, ct_systimer_callback, 0);
 }
 
 static void ct_systimer_start(struct ct_timer_instance *ti)
diff --git a/sound/pci/echoaudio/midi.c b/sound/pci/echoaudio/midi.c
index 8c685ddb1a41..6045a115cffe 100644
--- a/sound/pci/echoaudio/midi.c
+++ b/sound/pci/echoaudio/midi.c
@@ -199,9 +199,9 @@ static int snd_echo_midi_output_open(struct snd_rawmidi_substream *substream)
 
 
 
-static void snd_echo_midi_output_write(unsigned long data)
+static void snd_echo_midi_output_write(struct timer_list *t)
 {
-	struct echoaudio *chip = (struct echoaudio *)data;
+	struct echoaudio *chip = from_timer(chip, t, timer);
 	unsigned long flags;
 	int bytes, sent, time;
 	unsigned char buf[MIDI_OUT_BUFFER_SIZE - 1];
@@ -257,8 +257,8 @@ static void snd_echo_midi_output_trigger(struct snd_rawmidi_substream *substream
 	spin_lock_irq(&chip->lock);
 	if (up) {
 		if (!chip->tinuse) {
-			setup_timer(&chip->timer, snd_echo_midi_output_write,
-				    (unsigned long)chip);
+			timer_setup(&chip->timer, snd_echo_midi_output_write,
+				    0);
 			chip->tinuse = 1;
 		}
 	} else {
@@ -273,7 +273,7 @@ static void snd_echo_midi_output_trigger(struct snd_rawmidi_substream *substream
 	spin_unlock_irq(&chip->lock);
 
 	if (up && !chip->midi_full)
-		snd_echo_midi_output_write((unsigned long)chip);
+		snd_echo_midi_output_write(&chip->timer);
 }
 
 
diff --git a/sound/pci/korg1212/korg1212.c b/sound/pci/korg1212/korg1212.c
index 04cd71c74e5c..c7b007164c99 100644
--- a/sound/pci/korg1212/korg1212.c
+++ b/sound/pci/korg1212/korg1212.c
@@ -599,9 +599,9 @@ static void snd_korg1212_SendStopAndWait(struct snd_korg1212 *korg1212)
 }
 
 /* timer callback for checking the ack of stop request */
-static void snd_korg1212_timer_func(unsigned long data)
+static void snd_korg1212_timer_func(struct timer_list *t)
 {
-        struct snd_korg1212 *korg1212 = (struct snd_korg1212 *) data;
+	struct snd_korg1212 *korg1212 = from_timer(korg1212, t, timer);
 	unsigned long flags;
 	
 	spin_lock_irqsave(&korg1212->lock, flags);
@@ -2189,8 +2189,7 @@ static int snd_korg1212_create(struct snd_card *card, struct pci_dev *pci,
         init_waitqueue_head(&korg1212->wait);
         spin_lock_init(&korg1212->lock);
 	mutex_init(&korg1212->open_mutex);
-	setup_timer(&korg1212->timer, snd_korg1212_timer_func,
-		    (unsigned long)korg1212);
+	timer_setup(&korg1212->timer, snd_korg1212_timer_func, 0);
 
         korg1212->irq = -1;
         korg1212->clkSource = K1212_CLKIDX_Local;
diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index 9f0f73875f01..1bff4b1b39cd 100644
--- a/sound/pci/rme9652/hdsp.c
+++ b/sound/pci/rme9652/hdsp.c
@@ -1410,9 +1410,9 @@ static void snd_hdsp_midi_input_trigger(struct snd_rawmidi_substream *substream,
 	spin_unlock_irqrestore (&hdsp->lock, flags);
 }
 
-static void snd_hdsp_midi_output_timer(unsigned long data)
+static void snd_hdsp_midi_output_timer(struct timer_list *t)
 {
-	struct hdsp_midi *hmidi = (struct hdsp_midi *) data;
+	struct hdsp_midi *hmidi = from_timer(hmidi, t, timer);
 	unsigned long flags;
 
 	snd_hdsp_midi_output_write(hmidi);
@@ -1439,8 +1439,8 @@ static void snd_hdsp_midi_output_trigger(struct snd_rawmidi_substream *substream
 	spin_lock_irqsave (&hmidi->lock, flags);
 	if (up) {
 		if (!hmidi->istimer) {
-			setup_timer(&hmidi->timer, snd_hdsp_midi_output_timer,
-				    (unsigned long) hmidi);
+			timer_setup(&hmidi->timer, snd_hdsp_midi_output_timer,
+				    0);
 			mod_timer(&hmidi->timer, 1 + jiffies);
 			hmidi->istimer++;
 		}
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index f20d42714e4d..4c59983158e0 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -1946,9 +1946,9 @@ snd_hdspm_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
 	spin_unlock_irqrestore (&hdspm->lock, flags);
 }
 
-static void snd_hdspm_midi_output_timer(unsigned long data)
+static void snd_hdspm_midi_output_timer(struct timer_list *t)
 {
-	struct hdspm_midi *hmidi = (struct hdspm_midi *) data;
+	struct hdspm_midi *hmidi = from_timer(hmidi, t, timer);
 	unsigned long flags;
 
 	snd_hdspm_midi_output_write(hmidi);
@@ -1976,8 +1976,8 @@ snd_hdspm_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
 	spin_lock_irqsave (&hmidi->lock, flags);
 	if (up) {
 		if (!hmidi->istimer) {
-			setup_timer(&hmidi->timer, snd_hdspm_midi_output_timer,
-				    (unsigned long) hmidi);
+			timer_setup(&hmidi->timer,
+				    snd_hdspm_midi_output_timer, 0);
 			mod_timer(&hmidi->timer, 1 + jiffies);
 			hmidi->istimer++;
 		}
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index a98647ac497c..735f2d0033dd 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -3340,9 +3340,9 @@ static irqreturn_t rt5645_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static void rt5645_btn_check_callback(unsigned long data)
+static void rt5645_btn_check_callback(struct timer_list *t)
 {
-	struct rt5645_priv *rt5645 = (struct rt5645_priv *)data;
+	struct rt5645_priv *rt5645 = from_timer(rt5645, t, btn_check_timer);
 
 	queue_delayed_work(system_power_efficient_wq,
 		   &rt5645->jack_detect_work, msecs_to_jiffies(5));
@@ -3934,8 +3934,7 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
 		regmap_update_bits(rt5645->regmap, RT5645_IRQ_CTRL2,
 			RT5645_JD_1_1_MASK, RT5645_JD_1_1_INV);
 	}
-	setup_timer(&rt5645->btn_check_timer,
-		rt5645_btn_check_callback, (unsigned long)rt5645);
+	timer_setup(&rt5645->btn_check_timer, rt5645_btn_check_callback, 0);
 
 	INIT_DELAYED_WORK(&rt5645->jack_detect_work, rt5645_jack_detect_work);
 	INIT_DELAYED_WORK(&rt5645->rcclock_work, rt5645_rcclock_work);
diff --git a/sound/soc/omap/ams-delta.c b/sound/soc/omap/ams-delta.c
index 6c49f3d6fd96..d40219678700 100644
--- a/sound/soc/omap/ams-delta.c
+++ b/sound/soc/omap/ams-delta.c
@@ -260,7 +260,7 @@ static bool cx81801_cmd_pending;
 static bool ams_delta_muted;
 static DEFINE_SPINLOCK(ams_delta_lock);
 
-static void cx81801_timeout(unsigned long data)
+static void cx81801_timeout(struct timer_list *unused)
 {
 	int muted;
 
@@ -349,7 +349,7 @@ static void cx81801_receive(struct tty_struct *tty,
 		/* First modem response, complete setup procedure */
 
 		/* Initialize timer used for config pulse generation */
-		setup_timer(&cx81801_timer, cx81801_timeout, 0);
+		timer_setup(&cx81801_timer, cx81801_timeout, 0);
 
 		v253_ops.receive_buf(tty, cp, fp, count);
 
-- 
2.7.4


-- 
Kees Cook
Pixel Security

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