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spi: meson-spicc: add IRQ check in meson_spicc_probe

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commit e937440f7f 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: 454fa271bc ("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>
This commit is contained in:
Miaoqian Lin
2022-01-26 11:04:47 +00:00
committed by Greg Kroah-Hartman
parent c2cf65e100
commit ec942d08e0
1 changed files with 5 additions and 0 deletions
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5
drivers/spi/spi-meson-spicc.c
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@@ -693,6 +693,11 @@ static int meson_spicc_probe(struct platform_device *pdev)
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) {