diff options
| author | Oswald Buddenhagen <oswald.buddenhagen@gmx.de> | 2023-05-26 12:16:55 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-06-05 09:25:22 +0200 |
| commit | 67ff2add9e2cef1d5d60cf5a37f1f52c65bf97c7 (patch) | |
| tree | 32faacf2bf97d59a9103b4bdc5353b88e1bd161c /sound/pci/emu10k1/emuproc.c | |
| parent | 219153c6ed46b064f9c2b0f70dacf21f719751ee (diff) | |
ALSA: emu10k1: fix writing 1st pointer-offset register set through /proc
The limits were appropriate only for the 2nd set.
FWIW, the channel count 4 for the 2nd set is suspicious as well - at
least P17V_PLAYBACK_FIFO_PTR actually has 8 channels, and comments on
HCFG2 hint at that as well. But all bitmasks are documented only for 4
channels. Anyway, rectifying that is out of scope for this patch.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230526101659.437969-3-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/emu10k1/emuproc.c')
| -rw-r--r-- | sound/pci/emu10k1/emuproc.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sound/pci/emu10k1/emuproc.c b/sound/pci/emu10k1/emuproc.c index 6cf4a7e16b1d..81d48cd478b7 100644 --- a/sound/pci/emu10k1/emuproc.c +++ b/sound/pci/emu10k1/emuproc.c @@ -483,7 +483,8 @@ static void snd_emu_proc_ptr_reg_read(struct snd_info_entry *entry, } static void snd_emu_proc_ptr_reg_write(struct snd_info_entry *entry, - struct snd_info_buffer *buffer, int iobase) + struct snd_info_buffer *buffer, + int iobase, int length, int voices) { struct snd_emu10k1 *emu = entry->private_data; char line[64]; @@ -491,7 +492,7 @@ static void snd_emu_proc_ptr_reg_write(struct snd_info_entry *entry, while (!snd_info_get_line(buffer, line, sizeof(line))) { if (sscanf(line, "%x %x %x", ®, &channel_id, &val) != 3) continue; - if (reg < 0xa0 && val <= 0xffffffff && channel_id <= 3) + if (reg < length && channel_id < voices) snd_ptr_write(emu, iobase, reg, channel_id, val); } } @@ -499,13 +500,15 @@ static void snd_emu_proc_ptr_reg_write(struct snd_info_entry *entry, static void snd_emu_proc_ptr_reg_write00(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { - snd_emu_proc_ptr_reg_write(entry, buffer, 0); + snd_emu_proc_ptr_reg_write(entry, buffer, 0, 0x80, 64); } static void snd_emu_proc_ptr_reg_write20(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { - snd_emu_proc_ptr_reg_write(entry, buffer, 0x20); + struct snd_emu10k1 *emu = entry->private_data; + snd_emu_proc_ptr_reg_write(entry, buffer, 0x20, + emu->card_capabilities->ca0108_chip ? 0xa0 : 0x80, 4); } |