diff options
author | Takashi Iwai <tiwai@suse.de> | 2020-09-03 13:41:26 +0300 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2020-09-09 19:33:49 +0300 |
commit | 4adab848ae752cc92c4de1403144002f369b079f (patch) | |
tree | ee56203a22f8ba77d09fd2f48028283f6fc3efab /sound/pci | |
parent | 6053a712472461c3800d4406bea0c8d5ce98df1a (diff) | |
download | linux-4adab848ae752cc92c4de1403144002f369b079f.tar.xz |
ALSA: hdsp: Replace tasklet with work
The tasklet is an old API that should be deprecated, usually can be
converted to another decent API. In HDSP driver, a tasklet is still
used for offloading the MIDI I/O handling (optional via mixer
switch). It can be achieved gracefully with a work queued, too.
This patch replaces the tasklet usage in HDSP driver with a simple
work. The conversion is fairly straightforward. The only significant
difference is that a superfluous tasklet_kill() call is removed from
snd_hdap_midi_input_trigger().
Link: https://lore.kernel.org/r/20200903104131.21097-7-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r-- | sound/pci/rme9652/hdsp.c | 55 |
1 files changed, 27 insertions, 28 deletions
diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c index dda56ecfd33b..cea53a878c36 100644 --- a/sound/pci/rme9652/hdsp.c +++ b/sound/pci/rme9652/hdsp.c @@ -447,8 +447,8 @@ struct hdsp { struct snd_pcm_substream *capture_substream; struct snd_pcm_substream *playback_substream; struct hdsp_midi midi[2]; - struct tasklet_struct midi_tasklet; - int use_midi_tasklet; + struct work_struct midi_work; + int use_midi_work; int precise_ptr; u32 control_register; /* cached value */ u32 control2_register; /* cached value */ @@ -1385,7 +1385,6 @@ static void snd_hdsp_midi_input_trigger(struct snd_rawmidi_substream *substream, } } else { hdsp->control_register &= ~ie; - tasklet_kill(&hdsp->midi_tasklet); } hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register); @@ -2542,37 +2541,37 @@ static int snd_hdsp_put_precise_pointer(struct snd_kcontrol *kcontrol, struct sn return change; } -#define HDSP_USE_MIDI_TASKLET(xname, xindex) \ +#define HDSP_USE_MIDI_WORK(xname, xindex) \ { .iface = SNDRV_CTL_ELEM_IFACE_CARD, \ .name = xname, \ .index = xindex, \ - .info = snd_hdsp_info_use_midi_tasklet, \ - .get = snd_hdsp_get_use_midi_tasklet, \ - .put = snd_hdsp_put_use_midi_tasklet \ + .info = snd_hdsp_info_use_midi_work, \ + .get = snd_hdsp_get_use_midi_work, \ + .put = snd_hdsp_put_use_midi_work \ } -static int hdsp_set_use_midi_tasklet(struct hdsp *hdsp, int use_tasklet) +static int hdsp_set_use_midi_work(struct hdsp *hdsp, int use_work) { - if (use_tasklet) - hdsp->use_midi_tasklet = 1; + if (use_work) + hdsp->use_midi_work = 1; else - hdsp->use_midi_tasklet = 0; + hdsp->use_midi_work = 0; return 0; } -#define snd_hdsp_info_use_midi_tasklet snd_ctl_boolean_mono_info +#define snd_hdsp_info_use_midi_work snd_ctl_boolean_mono_info -static int snd_hdsp_get_use_midi_tasklet(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +static int snd_hdsp_get_use_midi_work(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct hdsp *hdsp = snd_kcontrol_chip(kcontrol); spin_lock_irq(&hdsp->lock); - ucontrol->value.integer.value[0] = hdsp->use_midi_tasklet; + ucontrol->value.integer.value[0] = hdsp->use_midi_work; spin_unlock_irq(&hdsp->lock); return 0; } -static int snd_hdsp_put_use_midi_tasklet(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) +static int snd_hdsp_put_use_midi_work(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct hdsp *hdsp = snd_kcontrol_chip(kcontrol); int change; @@ -2582,8 +2581,8 @@ static int snd_hdsp_put_use_midi_tasklet(struct snd_kcontrol *kcontrol, struct s return -EBUSY; val = ucontrol->value.integer.value[0] & 1; spin_lock_irq(&hdsp->lock); - change = (int)val != hdsp->use_midi_tasklet; - hdsp_set_use_midi_tasklet(hdsp, val); + change = (int)val != hdsp->use_midi_work; + hdsp_set_use_midi_work(hdsp, val); spin_unlock_irq(&hdsp->lock); return change; } @@ -2950,7 +2949,7 @@ HDSP_SPDIF_SYNC_CHECK("SPDIF Lock Status", 0), HDSP_ADATSYNC_SYNC_CHECK("ADAT Sync Lock Status", 0), HDSP_TOGGLE_SETTING("Line Out", HDSP_LineOut), HDSP_PRECISE_POINTER("Precise Pointer", 0), -HDSP_USE_MIDI_TASKLET("Use Midi Tasklet", 0), +HDSP_USE_MIDI_WORK("Use Midi Tasklet", 0), }; @@ -3370,7 +3369,7 @@ snd_hdsp_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) snd_iprintf(buffer, "MIDI1 Input status: 0x%x\n", hdsp_read(hdsp, HDSP_midiStatusIn0)); snd_iprintf(buffer, "MIDI2 Output status: 0x%x\n", hdsp_read(hdsp, HDSP_midiStatusOut1)); snd_iprintf(buffer, "MIDI2 Input status: 0x%x\n", hdsp_read(hdsp, HDSP_midiStatusIn1)); - snd_iprintf(buffer, "Use Midi Tasklet: %s\n", hdsp->use_midi_tasklet ? "on" : "off"); + snd_iprintf(buffer, "Use Midi Tasklet: %s\n", hdsp->use_midi_work ? "on" : "off"); snd_iprintf(buffer, "\n"); @@ -3791,9 +3790,9 @@ static int snd_hdsp_set_defaults(struct hdsp *hdsp) return 0; } -static void hdsp_midi_tasklet(struct tasklet_struct *t) +static void hdsp_midi_work(struct work_struct *work) { - struct hdsp *hdsp = from_tasklet(hdsp, t, midi_tasklet); + struct hdsp *hdsp = container_of(work, struct hdsp, midi_work); if (hdsp->midi[0].pending) snd_hdsp_midi_input_read (&hdsp->midi[0]); @@ -3838,7 +3837,7 @@ static irqreturn_t snd_hdsp_interrupt(int irq, void *dev_id) } if (midi0 && midi0status) { - if (hdsp->use_midi_tasklet) { + if (hdsp->use_midi_work) { /* we disable interrupts for this input until processing is done */ hdsp->control_register &= ~HDSP_Midi0InterruptEnable; hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register); @@ -3849,7 +3848,7 @@ static irqreturn_t snd_hdsp_interrupt(int irq, void *dev_id) } } if (hdsp->io_type != Multiface && hdsp->io_type != RPM && hdsp->io_type != H9632 && midi1 && midi1status) { - if (hdsp->use_midi_tasklet) { + if (hdsp->use_midi_work) { /* we disable interrupts for this input until processing is done */ hdsp->control_register &= ~HDSP_Midi1InterruptEnable; hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register); @@ -3859,8 +3858,8 @@ static irqreturn_t snd_hdsp_interrupt(int irq, void *dev_id) snd_hdsp_midi_input_read (&hdsp->midi[1]); } } - if (hdsp->use_midi_tasklet && schedule) - tasklet_schedule(&hdsp->midi_tasklet); + if (hdsp->use_midi_work && schedule) + queue_work(system_highpri_wq, &hdsp->midi_work); return IRQ_HANDLED; } @@ -5182,7 +5181,7 @@ static int snd_hdsp_create(struct snd_card *card, spin_lock_init(&hdsp->lock); - tasklet_setup(&hdsp->midi_tasklet, hdsp_midi_tasklet); + INIT_WORK(&hdsp->midi_work, hdsp_midi_work); pci_read_config_word(hdsp->pci, PCI_CLASS_REVISION, &hdsp->firmware_rev); hdsp->firmware_rev &= 0xff; @@ -5235,7 +5234,7 @@ static int snd_hdsp_create(struct snd_card *card, hdsp->irq = pci->irq; card->sync_irq = hdsp->irq; hdsp->precise_ptr = 0; - hdsp->use_midi_tasklet = 1; + hdsp->use_midi_work = 1; hdsp->dds_value = 0; if ((err = snd_hdsp_initialize_memory(hdsp)) < 0) @@ -5305,7 +5304,7 @@ static int snd_hdsp_free(struct hdsp *hdsp) { if (hdsp->port) { /* stop the audio, and cancel all interrupts */ - tasklet_kill(&hdsp->midi_tasklet); + cancel_work_sync(&hdsp->midi_work); hdsp->control_register &= ~(HDSP_Start|HDSP_AudioInterruptEnable|HDSP_Midi0InterruptEnable|HDSP_Midi1InterruptEnable); hdsp_write (hdsp, HDSP_controlRegister, hdsp->control_register); } |