From: Srinivasa Rao Mandadapu <srivasam@xxxxxxxxxxxxxx>
[ Upstream commit e681b1a6d706b4e54c3847bb822531b4660234f3 ]
Had a typo in lpass platform driver that resulted in crash
during suspend/resume with an HDMI dongle connected.
The regmap read/write/volatile regesters validation callbacks in lpass-cpu
were using MI2S rdma_channels count instead of hdmi_rdma_channels.
This typo error causing to read registers from the regmap beyond the length
of the mapping created by ioremap().
This fix avoids the need for reducing number hdmi_rdma_channels,
which is done in
commit 7dfe20ee92f6 ("ASoC: qcom: Fix number of HDMI RDMA channels on sc7180").
So reverting the same.
Fixes: 7cb37b7bd0d3c ("ASoC: qcom: Add support for lpass hdmi driver")
Signed-off-by: Srinivasa Rao Mandadapu <srivasam@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210202062727.22469-1-srivasam@xxxxxxxxxxxxxx
Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Tested-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/qcom/lpass-cpu.c | 8 ++++----
sound/soc/qcom/lpass-sc7180.c | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 73ca24c0a08b7..8e5415c9234f1 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -594,7 +594,7 @@ static bool lpass_hdmi_regmap_writeable(struct device *dev, unsigned int reg)
return true;
}
- for (i = 0; i < v->rdma_channels; ++i) {
+ for (i = 0; i < v->hdmi_rdma_channels; ++i) {
if (reg == LPAIF_HDMI_RDMACTL_REG(v, i))
return true;
if (reg == LPAIF_HDMI_RDMABASE_REG(v, i))
@@ -640,7 +640,7 @@ static bool lpass_hdmi_regmap_readable(struct device *dev, unsigned int reg)
if (reg == LPASS_HDMITX_APP_IRQSTAT_REG(v))
return true;
- for (i = 0; i < v->rdma_channels; ++i) {
+ for (i = 0; i < v->hdmi_rdma_channels; ++i) {
if (reg == LPAIF_HDMI_RDMACTL_REG(v, i))
return true;
if (reg == LPAIF_HDMI_RDMABASE_REG(v, i))
@@ -667,7 +667,7 @@ static bool lpass_hdmi_regmap_volatile(struct device *dev, unsigned int reg)
if (reg == LPASS_HDMI_TX_LEGACY_ADDR(v))
return true;
- for (i = 0; i < v->rdma_channels; ++i) {
+ for (i = 0; i < v->hdmi_rdma_channels; ++i) {
if (reg == LPAIF_HDMI_RDMACURR_REG(v, i))
return true;
}
@@ -817,7 +817,7 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
}
lpass_hdmi_regmap_config.max_register = LPAIF_HDMI_RDMAPER_REG(variant,
- variant->hdmi_rdma_channels);
+ variant->hdmi_rdma_channels - 1);
drvdata->hdmiif_map = devm_regmap_init_mmio(dev, drvdata->hdmiif,
&lpass_hdmi_regmap_config);
if (IS_ERR(drvdata->hdmiif_map)) {
diff --git a/sound/soc/qcom/lpass-sc7180.c b/sound/soc/qcom/lpass-sc7180.c
index 735c9dac28f26..8c168d3c589e9 100644
--- a/sound/soc/qcom/lpass-sc7180.c
+++ b/sound/soc/qcom/lpass-sc7180.c
@@ -171,7 +171,7 @@ static struct lpass_variant sc7180_data = {
.rdma_channels = 5,
.hdmi_rdma_reg_base = 0x64000,
.hdmi_rdma_reg_stride = 0x1000,
- .hdmi_rdma_channels = 3,
+ .hdmi_rdma_channels = 4,
.dmactl_audif_start = 1,
.wrdma_reg_base = 0x18000,
.wrdma_reg_stride = 0x1000,
--
2.27.0
