From 8197f489f4c4398391746a377c10501076b05168 Mon Sep 17 00:00:00 2001 From: Trent Piepho Date: Mon, 6 Nov 2017 10:38:23 -0800 Subject: spi: imx: Fix failure path leak on GPIO request error correctly In commit 974488e4ce1e ("spi: imx: Fix failure path leak on GPIO request error"), spi_bitbang_start() was moved later in the probe sequence. But this doesn't work, as spi_bitbang_start() has to be called before requesting GPIOs because the GPIO data in the spi master is populated when the master is registed, and that doesn't happen until spi_bitbang_start() is called. The default only works if one uses one CS. So add a failure path call to spi_bitbang_stop() to fix the leak. CC: Shawn Guo CC: Sascha Hauer CC: Fabio Estevam CC: Mark Brown CC: Oleksij Rempel Signed-off-by: Trent Piepho Reviewed-by: Oleksij Rempel Signed-off-by: Mark Brown --- drivers/spi/spi-imx.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'drivers/spi/spi-imx.c') diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 5ddd32ba2521..301cdb721bad 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -1613,6 +1613,11 @@ static int spi_imx_probe(struct platform_device *pdev) spi_imx->devtype_data->intctrl(spi_imx, 0); master->dev.of_node = pdev->dev.of_node; + ret = spi_bitbang_start(&spi_imx->bitbang); + if (ret) { + dev_err(&pdev->dev, "bitbang start failed with %d\n", ret); + goto out_clk_put; + } if (!spi_imx->slave_mode) { if (!master->cs_gpios) { @@ -1631,23 +1636,19 @@ static int spi_imx_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "Can't get CS GPIO %i\n", master->cs_gpios[i]); - goto out_clk_put; + goto out_spi_bitbang; } } } - ret = spi_bitbang_start(&spi_imx->bitbang); - if (ret) { - dev_err(&pdev->dev, "bitbang start failed with %d\n", ret); - goto out_clk_put; - } - dev_info(&pdev->dev, "probed\n"); clk_disable(spi_imx->clk_ipg); clk_disable(spi_imx->clk_per); return ret; +out_spi_bitbang: + spi_bitbang_stop(&spi_imx->bitbang); out_clk_put: clk_disable_unprepare(spi_imx->clk_ipg); out_put_per: -- cgit v1.2.3