spi: tegra114: Add missing IRQ check in tegra_spi_probe

[ 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@gmail.com>
Link: https://lore.kernel.org/r/20220128165238.25615-1-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-tegra114.c b/drivers/spi/spi-tegra114.c
index 0e1a8d7aa32245df0dfcdfea03ab8f18735a204d..9758b7f7e92fea1b7a3ab962b18027914e40ea2b 100644 (file)
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -1136,6 +1136,10 @@ 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");