From: Thomas Petazzoni Date: Tue, 16 May 2017 12:06:12 +0000 (+0200) Subject: ata: libahci: properly propagate return value of platform_get_irq() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c034640a32f8456018d9c8c83799ead683046b95;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git ata: libahci: properly propagate return value of platform_get_irq() When platform_get_irq() fails, it returns an error code, which libahci_platform and replaces it by -EINVAL. This commit fixes that by propagating the error code. It fixes the situation where platform_get_irq() returns -EPROBE_DEFER because the interrupt controller is not available yet, and generally looks like the right thing to do. We pay attention to not show the "no irq" message when we are in an EPROBE_DEFER situation, because the driver probing will be retried later on, once the interrupt controller becomes available to provide the interrupt. Signed-off-by: Thomas Petazzoni Reviewed-by: Hans de Goede Signed-off-by: Tejun Heo --- diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c index aaa761b9081c..cd2eab6aa92e 100644 --- a/drivers/ata/libahci_platform.c +++ b/drivers/ata/libahci_platform.c @@ -514,8 +514,9 @@ int ahci_platform_init_host(struct platform_device *pdev, irq = platform_get_irq(pdev, 0); if (irq <= 0) { - dev_err(dev, "no irq\n"); - return -EINVAL; + if (irq != -EPROBE_DEFER) + dev_err(dev, "no irq\n"); + return irq; } hpriv->irq = irq;