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ALSA: sb: 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.

[Re-use the existing chip->midi_substream_output instead of assigning
 a new field to struct snd_sb -- tiwai]

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Kees Cook 2017-10-24 08:34:58 -07:00 committed by Takashi Iwai
parent 57e69e2f06
commit 4f928246f0
2 changed files with 8 additions and 9 deletions
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6
sound/isa/sb/emu8000_pcm.c
View File

@ -193,9 +193,9 @@ static inline int emu8k_get_curpos(struct snd_emu8k_pcm *rec, int ch)
* timer interrupt handler
* check the current position and update the period if necessary.
*/
static void emu8k_pcm_timer_func(unsigned long data)
static void emu8k_pcm_timer_func(struct timer_list *t)
{
struct snd_emu8k_pcm *rec = (struct snd_emu8k_pcm *)data;
struct snd_emu8k_pcm *rec = from_timer(rec, t, timer);
int ptr, delta;
spin_lock(&rec->timer_lock);
@ -241,7 +241,7 @@ static int emu8k_pcm_open(struct snd_pcm_substream *subs)
runtime->private_data = rec;
spin_lock_init(&rec->timer_lock);
setup_timer(&rec->timer, emu8k_pcm_timer_func, (unsigned long)rec);
timer_setup(&rec->timer, emu8k_pcm_timer_func, 0);
runtime->hw = emu8k_pcm_hw;
runtime->hw.buffer_bytes_max = emu->mem_size - LOOP_BLANK_SIZE * 3;

11
sound/isa/sb/sb8_midi.c
View File

@ -209,10 +209,10 @@ static void snd_sb8dsp_midi_output_write(struct snd_rawmidi_substream *substream
}
}
static void snd_sb8dsp_midi_output_timer(unsigned long data)
static void snd_sb8dsp_midi_output_timer(struct timer_list *t)
{
struct snd_rawmidi_substream *substream = (struct snd_rawmidi_substream *) data;
struct snd_sb * chip = substream->rmidi->private_data;
struct snd_sb *chip = from_timer(chip, t, midi_timer);
struct snd_rawmidi_substream *substream = chip->midi_substream_output;
unsigned long flags;
spin_lock_irqsave(&chip->open_lock, flags);
@ -230,9 +230,8 @@ static void snd_sb8dsp_midi_output_trigger(struct snd_rawmidi_substream *substre
spin_lock_irqsave(&chip->open_lock, flags);
if (up) {
if (!(chip->open & SB_OPEN_MIDI_OUTPUT_TRIGGER)) {
setup_timer(&chip->midi_timer,
snd_sb8dsp_midi_output_timer,
(unsigned long) substream);
timer_setup(&chip->midi_timer,
snd_sb8dsp_midi_output_timer, 0);
mod_timer(&chip->midi_timer, 1 + jiffies);
chip->open |= SB_OPEN_MIDI_OUTPUT_TRIGGER;
}