6.6-stable review patch. If anyone has any objections, please let me know.
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From: Zhang Shurong zhang_shurong@foxmail.com
[ 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@foxmail.com Reviewed-by: Helen Koike helen.koike@collabora.com Link: https://lore.kernel.org/r/tencent_73FCC06A3D1C14EE5175253C6FB46A07B709@qq.co... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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,