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Fri, 13 Oct 2017 19:54:41 +0000 From: Trent Piepho To: linux-spi , linux-arm-kernel Subject: [PATCH 2/4] spi: imx: Fix failure path leak on GPIO request error Date: Fri, 13 Oct 2017 12:54:08 -0700 Message-Id: <20171013195410.30767-2-tpiepho@impinj.com> X-Mailer: git-send-email 2.13.6 In-Reply-To: <20171013195410.30767-1-tpiepho@impinj.com> References: <20171013195410.30767-1-tpiepho@impinj.com> MIME-Version: 1.0 X-Originating-IP: [216.243.31.162] X-ClientProxiedBy: MWHPR21CA0064.namprd21.prod.outlook.com (10.172.93.154) To BN6PR06MB2803.namprd06.prod.outlook.com (10.175.127.21) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: dc72ae7e-b12f-4c87-c2b8-08d512743eff X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(22001)(2017030254152)(2017052603199)(201703131423075)(201703031133081)(201702281549075); SRVR:BN6PR06MB2803; X-Microsoft-Exchange-Diagnostics: 1; BN6PR06MB2803; 3:Oq5MXeI1enX8kx0vDL8xFeLhxaciMh4tnsq3Q8XJn1yA+h9ojCurCsuQ10oZT+7WBn2sG9sENXRWgMzdemHyURl45uq5doihsv2sg2kWolTQU+VveFAmu0iO72RI1QzOXlNw7fhm0lS6KyNjxCvc6emEf1hLy2vs2Rx7tgFYBVWF6QQR49tTvcINqxJ/A7QVIaDtuBANWDlnh5IHkzgC78oj423AtwBzpN5V89PEnRKFoDU42ZlVLYQsZapARCX8; 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Fix this by moving spi_bitbang_start() to after the code that requets GPIOs. The GPIOs are dev managed and don't need explicit cleanup. Since spi_bitbang_start() is now the last operation, it doesn't need to be cleaned up in the failure path. Signed-off-by: Trent Piepho Reviewed-by: Oleksij Rempel --- drivers/spi/spi-imx.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 07e6250f2dad..fea46cbf458a 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -1451,11 +1451,6 @@ 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; - } /* Request GPIO CS lines, if any */ if (master->cs_gpios) { @@ -1473,6 +1468,12 @@ 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_clk_put; + } + dev_info(&pdev->dev, "probed\n"); clk_disable(spi_imx->clk_ipg);