40 lines
1.4 KiB
Diff
40 lines
1.4 KiB
Diff
From d3b0ffa1d75d5305ebe34735598993afbb8a869d Mon Sep 17 00:00:00 2001
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From: Navid Emamdoost <navid.emamdoost@gmail.com>
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Date: Mon, 30 Sep 2019 15:52:40 -0500
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Subject: spi: gpio: prevent memory leak in spi_gpio_probe
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In spi_gpio_probe an SPI master is allocated via spi_alloc_master, but
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this controller should be released if devm_add_action_or_reset fails,
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otherwise memory leaks. In order to avoid leak spi_contriller_put must
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be called in case of failure for devm_add_action_or_reset.
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Fixes: 8b797490b4db ("spi: gpio: Make sure spi_master_put() is called in every error path")
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Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
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Link: https://lore.kernel.org/r/20190930205241.5483-1-navid.emamdoost@gmail.com
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Signed-off-by: Mark Brown <broonie@kernel.org>
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---
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drivers/spi/spi-gpio.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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(limited to 'drivers/spi/spi-gpio.c')
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diff --git a/drivers/spi/spi-gpio.c b/drivers/spi/spi-gpio.c
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index 1d3e23ec20a6..f9c5bbb74714 100644
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--- a/drivers/spi/spi-gpio.c
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+++ b/drivers/spi/spi-gpio.c
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@@ -371,8 +371,10 @@ static int spi_gpio_probe(struct platform_device *pdev)
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return -ENOMEM;
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status = devm_add_action_or_reset(&pdev->dev, spi_gpio_put, master);
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- if (status)
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+ if (status) {
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+ spi_master_put(master);
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return status;
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+ }
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if (of_id)
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status = spi_gpio_probe_dt(pdev, master);
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--
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cgit 1.2-0.3.lf.el7
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