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authorCharles Keepax <ckeepax@opensource.cirrus.com>2019-03-19 11:52:06 +0000
committerMark Brown <broonie@kernel.org>2019-03-19 12:36:04 +0000
commita2225a6d155fcb247fe4c6d87f7c91807462966d (patch)
tree6cb9289ca86653c7c14ac3c86e0b6e173e37759d /sound/soc
parent48ead31ce247dc8c0b01ad99d1a97da35421493b (diff)
ASoC: wm_adsp: Add locking to wm_adsp2_bus_error
Best to lock across handling the bus error to ensure the DSP doesn't change power state as we are reading the status registers. Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/wm_adsp.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index b3348a213c18..c19a8a041d4d 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -3922,11 +3922,13 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp)
struct regmap *regmap = dsp->regmap;
int ret = 0;
+ mutex_lock(&dsp->pwr_lock);
+
ret = regmap_read(regmap, dsp->base + ADSP2_LOCK_REGION_CTRL, &val);
if (ret) {
adsp_err(dsp,
"Failed to read Region Lock Ctrl register: %d\n", ret);
- return IRQ_HANDLED;
+ goto error;
}
if (val & ADSP2_WDT_TIMEOUT_STS_MASK) {
@@ -3945,7 +3947,7 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp)
adsp_err(dsp,
"Failed to read Bus Err Addr register: %d\n",
ret);
- return IRQ_HANDLED;
+ goto error;
}
adsp_err(dsp, "bus error address = 0x%x\n",
@@ -3958,7 +3960,7 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp)
adsp_err(dsp,
"Failed to read Pmem Xmem Err Addr register: %d\n",
ret);
- return IRQ_HANDLED;
+ goto error;
}
adsp_err(dsp, "xmem error address = 0x%x\n",
@@ -3971,6 +3973,9 @@ irqreturn_t wm_adsp2_bus_error(struct wm_adsp *dsp)
regmap_update_bits(regmap, dsp->base + ADSP2_LOCK_REGION_CTRL,
ADSP2_CTRL_ERR_EINT, ADSP2_CTRL_ERR_EINT);
+error:
+ mutex_unlock(&dsp->pwr_lock);
+
return IRQ_HANDLED;
}
EXPORT_SYMBOL_GPL(wm_adsp2_bus_error);