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Date: Mon, 18 Apr 2022 14:11:48 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Miaoqian Lin <linmq006@...il.com>, Mark Brown <broonie@...nel.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.9 042/218] spi: tegra114: Add missing IRQ check in tegra_spi_probe From: Miaoqian Lin <linmq006@...il.com> [ Upstream commit 4f92724d4b92c024e721063f520d66e11ca4b54b ] This func misses checking for platform_get_irq()'s call and may passes the negative error codes to request_threaded_irq(), which takes unsigned IRQ #, causing it to fail with -EINVAL, overriding an original error code. Stop calling request_threaded_irq() with invalid IRQ #s. Fixes: f333a331adfa ("spi/tegra114: add spi driver") Signed-off-by: Miaoqian Lin <linmq006@...il.com> Link: https://lore.kernel.org/r/20220128165238.25615-1-linmq006@gmail.com Signed-off-by: Mark Brown <broonie@...nel.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/spi/spi-tegra114.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index d1ca8f619b82..89a3121f4f25 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -1098,6 +1098,10 @@ static int tegra_spi_probe(struct platform_device *pdev) tspi->phys = r->start; spi_irq = platform_get_irq(pdev, 0); + if (spi_irq < 0) { + ret = spi_irq; + goto exit_free_master; + } tspi->irq = spi_irq; tspi->clk = devm_clk_get(&pdev->dev, "spi"); -- 2.34.1
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