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| author |   Stefan Binding <sbinding@opensource.cirrus.com> | 2022-10-11 15:35:49 +0100 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2022-10-12 08:02:46 +0200 |
| commit | 06f3a0a758c4246dc644e22fb33f85c6e5f92af6 (patch) | |
| tree | 53534dea4109535db4d68dcb7785c9624b5709c2 /sound/pci/hda | |
| parent | ALSA: hda: hda_cs_dsp_ctl: Minor clean and redundant code removal (diff) | |
| download | linux-dev-06f3a0a758c4246dc644e22fb33f85c6e5f92af6.tar.xz linux-dev-06f3a0a758c4246dc644e22fb33f85c6e5f92af6.zip | |
ALSA: hda: hda_cs_dsp_ctl: Ensure pwr_lock is held before reading/writing controls
These apis require the pwr_lock to be held.
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20221011143552.621792-3-sbinding@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda')
| -rw-r--r-- | sound/pci/hda/hda_cs_dsp_ctl.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/sound/pci/hda/hda_cs_dsp_ctl.c b/sound/pci/hda/hda_cs_dsp_ctl.c index 41d3e8fd289d..75fb69185817 100644 --- a/sound/pci/hda/hda_cs_dsp_ctl.c +++ b/sound/pci/hda/hda_cs_dsp_ctl.c @@ -199,11 +199,14 @@ EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_control_remove, SND_HDA_CS_DSP_CONTROLS); int hda_cs_dsp_write_ctl(struct cs_dsp *dsp, const char *name, int type, unsigned int alg, const void *buf, size_t len) { - struct cs_dsp_coeff_ctl *cs_ctl = cs_dsp_get_ctl(dsp, name, type, alg); + struct cs_dsp_coeff_ctl *cs_ctl; struct hda_cs_dsp_coeff_ctl *ctl; int ret; + mutex_lock(&dsp->pwr_lock); + cs_ctl = cs_dsp_get_ctl(dsp, name, type, alg); ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len); + mutex_unlock(&dsp->pwr_lock); if (ret) return ret; @@ -221,7 +224,13 @@ EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_write_ctl, SND_HDA_CS_DSP_CONTROLS); int hda_cs_dsp_read_ctl(struct cs_dsp *dsp, const char *name, int type, unsigned int alg, void *buf, size_t len) { - return cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(dsp, name, type, alg), 0, buf, len); + int ret; + + mutex_lock(&dsp->pwr_lock); + ret = cs_dsp_coeff_read_ctrl(cs_dsp_get_ctl(dsp, name, type, alg), 0, buf, len); + mutex_unlock(&dsp->pwr_lock); + + return ret; } EXPORT_SYMBOL_NS_GPL(hda_cs_dsp_read_ctl, SND_HDA_CS_DSP_CONTROLS); |