From: Miaoqian Lin linmq006@gmail.com
commit e937440f7fc444a3e3f1fb75ea65292d6f433a44 upstream.
This check misses checking for platform_get_irq()'s call and may passes the negative error codes to devm_request_irq(), which takes unsigned IRQ #, causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s.
Fixes: 454fa271bc4e ("spi: Add Meson SPICC driver") Signed-off-by: Miaoqian Lin linmq006@gmail.com Link: https://lore.kernel.org/r/20220126110447.24549-1-linmq006@gmail.com Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/spi/spi-meson-spicc.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/spi/spi-meson-spicc.c +++ b/drivers/spi/spi-meson-spicc.c @@ -527,6 +527,11 @@ static int meson_spicc_probe(struct plat writel_relaxed(0, spicc->base + SPICC_INTREG);
irq = platform_get_irq(pdev, 0); + if (irq < 0) { + ret = irq; + goto out_master; + } + ret = devm_request_irq(&pdev->dev, irq, meson_spicc_irq, 0, NULL, spicc); if (ret) {