spi: tegra210-quad: Fix missin IRQ check in tegra_qspi_probe

[ 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>

diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c
index 2354ca1..7967073 100644 (file)
--- 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");