diff options
| author | Oswald Buddenhagen <oswald.buddenhagen@gmx.de> | 2023-07-10 09:59:55 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-07-10 17:56:59 +0300 |
| commit | fbb64eedf5a3a98071ee75808cfc1367d1e75783 (patch) | |
| tree | ce5b66828d053708c24daf9e13a4de80cc434a99 /sound/pci/emu10k1/io.c | |
| parent | 7d43f51e4046c49230dea0d4f991c4cd1759327f (diff) | |
| download | linux-fbb64eedf5a3a98071ee75808cfc1367d1e75783.tar.xz | |
ALSA: emu10k1: make E-MU dock monitoring interrupt-driven
... instead of using a one-second polling timer.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230710065956.1246364-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/emu10k1/io.c')
| -rw-r--r-- | sound/pci/emu10k1/io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c index a0d66ce3ee83..c695cb863e5e 100644 --- a/sound/pci/emu10k1/io.c +++ b/sound/pci/emu10k1/io.c @@ -302,6 +302,8 @@ static void snd_emu1010_fpga_read_locked(struct snd_emu10k1 *emu, u32 reg, u32 * { // The higest input pin is used as the designated interrupt trigger, // so it needs to be masked out. + // But note that any other input pin change will also cause an IRQ, + // so using this function often causes an IRQ as a side effect. u32 mask = emu->card_capabilities->ca0108_chip ? 0x1f : 0x7f; if (snd_BUG_ON(reg > 0x3f)) return; |