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authorMarek Vasut <marex@denx.de>2020-10-05 15:22:29 +0200
committerMark Brown <broonie@kernel.org>2020-10-05 16:54:13 +0100
commit45f0bbdafd26d6d772172563b30bff561cec9133 (patch)
tree0485e263d32edbf5d0b84631f2dcab9c782a6864 /drivers/spi
parent1c33524f79853f41e80390b1a223254aadd30bd4 (diff)
downloadlinux-45f0bbdafd26d6d772172563b30bff561cec9133.tar.bz2
spi: imx: Fix freeing of DMA channels if spi_bitbang_start() fails
If the SPI controller has has_dmamode = true and spi_bitbang_start() fails in spi_imx_probe(), then the driver must release the DMA channels acquired in spi_imx_sdma_init() by calling spi_imx_sdma_exit() in the fail path. Fixes: f62caccd12c1 ("spi: spi-imx: add DMA support") Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: Mark Brown <broonie@kernel.org> Cc: NXP Linux Team <linux-imx@nxp.com> Cc: Robin Gong <b38343@freescale.com> Cc: Shawn Guo <shawnguo@kernel.org> Link: https://lore.kernel.org/r/20201005132229.513119-1-marex@denx.de Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-imx.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 38a5f1304cec..e38e5ad3c706 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -1707,7 +1707,7 @@ static int spi_imx_probe(struct platform_device *pdev)
ret = spi_bitbang_start(&spi_imx->bitbang);
if (ret) {
dev_err(&pdev->dev, "bitbang start failed with %d\n", ret);
- goto out_runtime_pm_put;
+ goto out_bitbang_start;
}
dev_info(&pdev->dev, "probed\n");
@@ -1717,6 +1717,9 @@ static int spi_imx_probe(struct platform_device *pdev)
return ret;
+out_bitbang_start:
+ if (spi_imx->devtype_data->has_dmamode)
+ spi_imx_sdma_exit(spi_imx);
out_runtime_pm_put:
pm_runtime_dont_use_autosuspend(spi_imx->dev);
pm_runtime_put_sync(spi_imx->dev);