Messages in this thread | | | Date | Wed, 9 Aug 2017 10:03:27 -0400 (EDT) | From | Alan Stern <> | Subject | Re: [PATCH] usb: ehci-omap: fix error return code in ehci_hcd_omap_probe() |
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On Tue, 8 Aug 2017, Gustavo A. R. Silva wrote:
> platform_get_irq() returns an error code, but the ehci-omap driver > ignores it and always returns -ENODEV. This is not correct and, > prevents -EPROBE_DEFER from being propagated properly. > > Also, 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> > --- > drivers/usb/host/ehci-omap.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c > index 94ea9ff..4d30853 100644 > --- a/drivers/usb/host/ehci-omap.c > +++ b/drivers/usb/host/ehci-omap.c > @@ -130,8 +130,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) > > irq = platform_get_irq(pdev, 0); > if (irq < 0) { > - dev_err(dev, "EHCI irq failed\n"); > - return -ENODEV; > + dev_err(dev, "EHCI irq failed: %d\n", irq); > + return irq; > } > > res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
Acked-by: Alan Stern <stern@rowland.harvard.edu>
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