6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>
[ Upstream commit eb9913b511f10968a02cfa5329a896855dd152a3 ]
This func misses checking for platform_get_irq()'s call and may passes the
negative error codes to request_irq(), which takes unsigned IRQ #,
causing it to fail with -EINVAL, overriding an original error code.
Fix this by stop calling request_irq() with invalid IRQ #s.
Fixes: dc4dc3605639 ("spi: tegra: add spi driver for SLINK controller")
Signed-off-by: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>
Reviewed-by: Helen Koike <helen.koike@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/tencent_73FCC06A3D1C14EE5175253C6FB46A07B709@xxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/spi/spi-tegra20-slink.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index 4d6db6182c5ed..f5cd365c913a8 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -1086,6 +1086,8 @@ static int tegra_slink_probe(struct platform_device *pdev)
reset_control_deassert(tspi->rst);
spi_irq = platform_get_irq(pdev, 0);
+ if (spi_irq < 0)
+ return spi_irq;
tspi->irq = spi_irq;
ret = request_threaded_irq(tspi->irq, tegra_slink_isr,
tegra_slink_isr_thread, IRQF_ONESHOT,
--
2.42.0
