| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 33/39] spi: bcm2835: Release the DMA channel if probe fails after dma_init | Date | Thu, 10 Dec 2020 15:26:44 +0100 |
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From: Peter Ujfalusi <peter.ujfalusi@ti.com>
[ Upstream commit 666224b43b4bd4612ce3b758c038f9bc5c5e3fcb ]
The DMA channel was not released if either devm_request_irq() or devm_spi_register_controller() failed.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Link: https://lore.kernel.org/r/20191212135550.4634-3-peter.ujfalusi@ti.com Signed-off-by: Mark Brown <broonie@kernel.org> [lukas: backport to 4.19-stable] Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/spi/spi-bcm2835.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -792,18 +792,19 @@ static int bcm2835_spi_probe(struct plat dev_name(&pdev->dev), master); if (err) { dev_err(&pdev->dev, "could not request IRQ: %d\n", err); - goto out_clk_disable; + goto out_dma_release; } err = spi_register_master(master); if (err) { dev_err(&pdev->dev, "could not register SPI master: %d\n", err); - goto out_clk_disable; + goto out_dma_release; } return 0; -out_clk_disable: +out_dma_release: + bcm2835_dma_release(master); clk_disable_unprepare(bs->clk); return err; }
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