From: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
commit 1d309cd688a76fb733f0089d36dc630327b32d59 upstream.
Release the RX channel and free the dma coherent memory when
devm_spi_register_master() fails.
Fixes: 5720ec0a6d26 ("spi: spi-ti-qspi: Add DMA support for QSPI mmap read")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210218130950.90155-1-tudor.ambarus@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi-ti-qspi.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
--- a/drivers/spi/spi-ti-qspi.c
+++ b/drivers/spi/spi-ti-qspi.c
@@ -733,6 +733,17 @@ static int ti_qspi_runtime_resume(struct
return 0;
}
+static void ti_qspi_dma_cleanup(struct ti_qspi *qspi)
+{
+ if (qspi->rx_bb_addr)
+ dma_free_coherent(qspi->dev, QSPI_DMA_BUFFER_SIZE,
+ qspi->rx_bb_addr,
+ qspi->rx_bb_dma_addr);
+
+ if (qspi->rx_chan)
+ dma_release_channel(qspi->rx_chan);
+}
+
static const struct of_device_id ti_qspi_match[] = {
{.compatible = "ti,dra7xxx-qspi" },
{.compatible = "ti,am4372-qspi" },
@@ -886,6 +897,8 @@ no_dma:
if (!ret)
return 0;
+ ti_qspi_dma_cleanup(qspi);
+
pm_runtime_disable(&pdev->dev);
free_master:
spi_master_put(master);
@@ -904,12 +917,7 @@ static int ti_qspi_remove(struct platfor
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
- if (qspi->rx_bb_addr)
- dma_free_coherent(qspi->dev, QSPI_DMA_BUFFER_SIZE,
- qspi->rx_bb_addr,
- qspi->rx_bb_dma_addr);
- if (qspi->rx_chan)
- dma_release_channel(qspi->rx_chan);
+ ti_qspi_dma_cleanup(qspi);
return 0;
}
