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spi: xlp: fix error return code in xlp_spi_probe() 

platform_get_irq() returns an error code, but the spi-xlp driver ignores
it and always returns -EINVAL. This is not correct and, prevents
-EPROBE_DEFER from being propagated properly.

Notice that platform_get_irq() no longer returns 0 on error:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e330b9a6bb35dc7097a4f02cb1ae7b6f96df92af

Print and propagate the return value of platform_get_irq on failure.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2017-08-07 23:45:02 -05:00 committed by Mark Brown
parent 5771a8c088
commit 9a6b94796a
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-xlp.c
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@ -393,8 +393,8 @@ static int xlp_spi_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "no IRQ resource found\n");
return -EINVAL;
dev_err(&pdev->dev, "no IRQ resource found: %d\n", irq);
return irq;
}
err = devm_request_irq(&pdev->dev, irq, xlp_spi_interrupt, 0,
pdev->name, xspi);