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pcm: hw: fix minor bug in sw_params ioctl

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Commit 2115cdb added a new call to the `SNDRV_PCM_IOCTL_SW_PARAMS`
ioctl on line 675 of src/pcm/pcm_hw.c, but passed the `sw_params`
argument by value; this should be passed by pointer.

I ran across this in the context of the direwolf software modem
for amateur radio; debugging details are in
https://groups.io/g/direwolf/message/8286

Fixes: https://github.com/alsa-project/alsa-lib/pull/330

Signed-off-by: Dan Cross <cross@gmail.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Dan Cross 2023-06-14 21:09:10 +00:00 • committed by Jaroslav Kysela
parent 77247f51c4
commit b7389e2e2e
1 changed files with 1 additions and 1 deletions
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2
src/pcm/pcm_hw.c
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@ -672,7 +672,7 @@ static int snd_pcm_hw_prepare(snd_pcm_t *pcm)
if (hw->prepare_reset_sw_params) {
snd_pcm_sw_params_current_no_lock(pcm, &sw_params);
if (ioctl(hw->fd, SNDRV_PCM_IOCTL_SW_PARAMS, sw_params) < 0) {
if (ioctl(hw->fd, SNDRV_PCM_IOCTL_SW_PARAMS, &sw_params) < 0) {
err = -errno;
SYSMSG("SNDRV_PCM_IOCTL_SW_PARAMS failed (%i)", err);
return err;