From b3c15f78befc6031de7d5bcb683d37018b20c425 Mon Sep 17 00:00:00 2001 From: Tudor Ambarus Date: Thu, 18 Feb 2021 15:09:50 +0200 Subject: [PATCH 1/3] spi: spi-ti-qspi: Free DMA resources 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 Link: https://lore.kernel.org/r/20210218130950.90155-1-tudor.ambarus@microchip.com Signed-off-by: Mark Brown --- 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 @@ 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 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; } From 73ae625da5c36300fccd809738e7c68f49ebce35 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Tue, 23 Feb 2021 16:18:50 +0100 Subject: [PATCH 2/3] spi: bcm63xx-spi: fix pm_runtime MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The driver sets auto_runtime_pm to true, but it doesn't call pm_runtime_enable(), which results in "Failed to power device" when PM support is enabled. Signed-off-by: Álvaro Fernández Rojas Link: https://lore.kernel.org/r/20210223151851.4110-2-noltari@gmail.com Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 96d075e633f4..d08bb7600150 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -593,11 +593,13 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS); + pm_runtime_enable(&pdev->dev); + /* register and we are done */ ret = devm_spi_register_master(dev, master); if (ret) { dev_err(dev, "spi register failed\n"); - goto out_clk_disable; + goto out_pm_disable; } dev_info(dev, "at %pr (irq %d, FIFOs size %d)\n", @@ -605,6 +607,8 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) return 0; +out_pm_disable: + pm_runtime_disable(&pdev->dev); out_clk_disable: clk_disable_unprepare(clk); out_err: From 216e8e80057a9f0b6366327881acf88eaf9f1fd4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Tue, 23 Feb 2021 16:18:51 +0100 Subject: [PATCH 3/3] spi: bcm63xx-hsspi: fix pm_runtime MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The driver sets auto_runtime_pm to true, but it doesn't call pm_runtime_enable(), which results in "Failed to power device" when PM support is enabled. Signed-off-by: Álvaro Fernández Rojas Link: https://lore.kernel.org/r/20210223151851.4110-3-noltari@gmail.com Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx-hsspi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-bcm63xx-hsspi.c b/drivers/spi/spi-bcm63xx-hsspi.c index 1f08d7553f07..b871fd810d80 100644 --- a/drivers/spi/spi-bcm63xx-hsspi.c +++ b/drivers/spi/spi-bcm63xx-hsspi.c @@ -21,6 +21,7 @@ #include #include #include +#include #define HSSPI_GLOBAL_CTRL_REG 0x0 #define GLOBAL_CTRL_CS_POLARITY_SHIFT 0 @@ -439,13 +440,17 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev) if (ret) goto out_put_master; + pm_runtime_enable(&pdev->dev); + /* register and we are done */ ret = devm_spi_register_master(dev, master); if (ret) - goto out_put_master; + goto out_pm_disable; return 0; +out_pm_disable: + pm_runtime_disable(&pdev->dev); out_put_master: spi_master_put(master); out_disable_pll_clk: