diff options
| author | Carlos Song <carlos.song@nxp.com> | 2024-04-03 11:40:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-10-17 16:24:11 +0300 |
| commit | 924c0af49c636da1ad577322db22233b6748024a (patch) | |
| tree | d93577d0df8312fb59930bb7ac536ace9b7ae721 | |
| parent | 18f3fdb1749694c4e793b262b99b33740deea994 (diff) | |
| download | linux-924c0af49c636da1ad577322db22233b6748024a.tar.xz | |
spi: spi-fsl-lpspi: remove redundant spi_controller_put call
[ Upstream commit bff892acf79cec531da6cb21c50980a584ce1476 ]
devm_spi_alloc_controller will allocate an SPI controller and
automatically release a reference on it when dev is unbound from
its driver. It doesn't need to call spi_controller_put explicitly
to put the reference when lpspi driver failed initialization.
Fixes: 2ae0ab0143fc ("spi: lpspi: Avoid potential use-after-free in probe()")
Signed-off-by: Carlos Song <carlos.song@nxp.com>
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Link: https://msgid.link/r/20240403084029.2000544-1-carlos.song@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/spi/spi-fsl-lpspi.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 180cea7d3817..13313f07839b 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -881,39 +881,39 @@ static int fsl_lpspi_probe(struct platform_device *pdev) fsl_lpspi->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(fsl_lpspi->base)) { ret = PTR_ERR(fsl_lpspi->base); - goto out_controller_put; + return ret; } fsl_lpspi->base_phys = res->start; irq = platform_get_irq(pdev, 0); if (irq < 0) { ret = irq; - goto out_controller_put; + return ret; } ret = devm_request_irq(&pdev->dev, irq, fsl_lpspi_isr, 0, dev_name(&pdev->dev), fsl_lpspi); if (ret) { dev_err(&pdev->dev, "can't get irq%d: %d\n", irq, ret); - goto out_controller_put; + return ret; } fsl_lpspi->clk_per = devm_clk_get(&pdev->dev, "per"); if (IS_ERR(fsl_lpspi->clk_per)) { ret = PTR_ERR(fsl_lpspi->clk_per); - goto out_controller_put; + return ret; } fsl_lpspi->clk_ipg = devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(fsl_lpspi->clk_ipg)) { ret = PTR_ERR(fsl_lpspi->clk_ipg); - goto out_controller_put; + return ret; } /* enable the clock */ ret = fsl_lpspi_init_rpm(fsl_lpspi); if (ret) - goto out_controller_put; + return ret; ret = pm_runtime_get_sync(fsl_lpspi->dev); if (ret < 0) { @@ -974,8 +974,6 @@ out_pm_get: pm_runtime_dont_use_autosuspend(fsl_lpspi->dev); pm_runtime_put_sync(fsl_lpspi->dev); pm_runtime_disable(fsl_lpspi->dev); -out_controller_put: - spi_controller_put(controller); return ret; } |