diff options
| author | Tony Luck <tony.luck@intel.com> | 2006-06-23 13:46:23 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2006-06-23 13:46:23 -0700 |
| commit | 8cf60e04a131310199d5776e2f9e915f0c468899 (patch) | |
| tree | 373a68e88e6737713a0a5723d552cdeefffff929 /sound/isa/sb/sb8_midi.c | |
| parent | 1323523f505606cfd24af6122369afddefc3b09d (diff) | |
| parent | 95eaa5fa8eb2c345244acd5f65b200b115ae8c65 (diff) | |
Auto-update from upstream
Diffstat (limited to 'sound/isa/sb/sb8_midi.c')
| -rw-r--r-- | sound/isa/sb/sb8_midi.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/sound/isa/sb/sb8_midi.c b/sound/isa/sb/sb8_midi.c index c549aceea29..0b67edd7ac6 100644 --- a/sound/isa/sb/sb8_midi.c +++ b/sound/isa/sb/sb8_midi.c @@ -32,20 +32,22 @@ #include <sound/core.h> #include <sound/sb.h> -/* - - */ -irqreturn_t snd_sb8dsp_midi_interrupt(struct snd_sb * chip) +irqreturn_t snd_sb8dsp_midi_interrupt(struct snd_sb *chip) { struct snd_rawmidi *rmidi; int max = 64; char byte; - if (chip == NULL || (rmidi = chip->rmidi) == NULL) { + if (!chip) + return IRQ_NONE; + + rmidi = chip->rmidi; + if (!rmidi) { inb(SBP(chip, DATA_AVAIL)); /* ack interrupt */ return IRQ_NONE; } + spin_lock(&chip->midi_input_lock); while (max-- > 0) { if (inb(SBP(chip, DATA_AVAIL)) & 0x80) { @@ -59,10 +61,6 @@ irqreturn_t snd_sb8dsp_midi_interrupt(struct snd_sb * chip) return IRQ_HANDLED; } -/* - - */ - static int snd_sb8dsp_midi_input_open(struct snd_rawmidi_substream *substream) { unsigned long flags; @@ -252,10 +250,6 @@ static void snd_sb8dsp_midi_output_trigger(struct snd_rawmidi_substream *substre snd_sb8dsp_midi_output_write(substream); } -/* - - */ - static struct snd_rawmidi_ops snd_sb8dsp_midi_output = { .open = snd_sb8dsp_midi_output_open, |