Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 022/323] spi: spi-ti-qspi: Free DMA resources | Date | Thu, 20 May 2021 11:18:34 +0200 |
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From: Tudor Ambarus <tudor.ambarus@microchip.com>
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@vger.kernel.org Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Link: https://lore.kernel.org/r/20210218130950.90155-1-tudor.ambarus@microchip.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- 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 @@ -643,6 +643,17 @@ 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" }, @@ -794,6 +805,8 @@ no_dma: if (!ret) return 0; + ti_qspi_dma_cleanup(qspi); + pm_runtime_disable(&pdev->dev); free_master: spi_master_put(master); @@ -812,12 +825,7 @@ 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; }
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