HACK: geni: Disable DMA operations

Fail DMA operations int he geni serial engine core, as this causes I2C operations to timeout, preventing the keyboard from probing. This needs to be investigated further. Signed-off-by: AArch64 Laptops <aarch64laptops@gmail.com>
aarch64-laptops · Feb 22, 2019 · 7922b8b · 7922b8b
1 parent 67efbfa
commit 7922b8b
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
@@ -623,6 +623,8 @@ int geni_se_tx_dma_prep(struct geni_se *se, void *buf, size_t len,
 	struct geni_wrapper *wrapper = se->wrapper;
 	u32 val;
 
+	return -EIO;
+
 	*iova = dma_map_single(wrapper->dev, buf, len, DMA_TO_DEVICE);
 	if (dma_mapping_error(wrapper->dev, *iova))
 		return -EIO;
@@ -656,6 +658,8 @@ int geni_se_rx_dma_prep(struct geni_se *se, void *buf, size_t len,
 	struct geni_wrapper *wrapper = se->wrapper;
 	u32 val;
 
+	return -EIO;
+
 	*iova = dma_map_single(wrapper->dev, buf, len, DMA_FROM_DEVICE);
 	if (dma_mapping_error(wrapper->dev, *iova))
 		return -EIO;