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[5.15,202/913] spi: tegra210-quad: Fix missin IRQ check in tegra_qspi_probe

Message ID 20220405070345.913802108@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman April 5, 2022, 7:21 a.m. UTC 
From: Miaoqian Lin <linmq006@gmail.com>

[ Upstream commit 47c3e06ed95aa9b74932dbc6b23b544f644faf84 ]

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: 921fc1838fb0 ("spi: tegra210-quad: Add support for Tegra210 QSPI controller")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220128165956.27821-1-linmq006@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/spi/spi-tegra210-quad.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c
index 2354ca1e3858..7967073c1354 100644
--- a/drivers/spi/spi-tegra210-quad.c
+++ b/drivers/spi/spi-tegra210-quad.c
@@ -1249,6 +1249,8 @@  static int tegra_qspi_probe(struct platform_device *pdev)
 
 	tqspi->phys = r->start;
 	qspi_irq = platform_get_irq(pdev, 0);
+	if (qspi_irq < 0)
+		return qspi_irq;
 	tqspi->irq = qspi_irq;
 
 	tqspi->clk = devm_clk_get(&pdev->dev, "qspi");