From: Tudor Ambarus <tudor.ambarus@microchip.com>
To: <broonie@kernel.org>, <vigneshr@ti.com>
Cc: <linux-spi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Tudor Ambarus <tudor.ambarus@microchip.com>
Subject: [PATCH] spi: spi-ti-qspi: Free DMA resources
Date: Thu, 18 Feb 2021 15:01:04 +0200 [thread overview]
Message-ID: <20210218130104.89506-1-tudor.ambarus@microchip.com> (raw)
Release the RX channel and free the dma coherent memory when
devm_spi_register_master() fails
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/spi/spi-ti-qspi.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
index 9417385c0921..e06aafe169e0 100644
--- 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 device *dev)
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 @@ static int ti_qspi_probe(struct platform_device *pdev)
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 platform_device *pdev)
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;
}
--
2.25.1
reply other threads:[~2021-02-18 15:30 UTC|newest]
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