4.4-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 99dbff202e28ad1dadf55b058bcae7908678e963 ]
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/?i...
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 Acked-by: Alan Stern stern@rowland.harvard.edu Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 a24720beb39d..cccde8217f28 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);