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usb: host: ohci-tmio: add IRQ check

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The driver neglects to check the  result of platform_get_irq()'s call and
blithely passes the negative error codes to usb_add_hcd() (which takes
*unsigned* IRQ #), causing request_irq() that it calls to fail with
-EINVAL, overriding an original error code. Stop calling usb_add_hcd()
with the invalid IRQ #s.

Fixes: 78c73414f4 ("USB: ohci: add support for tmio-ohci cell")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/402e1a45-a0a4-0e08-566a-7ca1331506b1@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sergey Shtylyov 2021-08-13 23:30:18 +03:00 committed by Greg Kroah-Hartman
parent 1a5f6cd286
commit 4ac5132e8a
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/ohci-tmio.c
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@ -202,6 +202,9 @@ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev)
if (!cell)
return -EINVAL;
if (irq < 0)
return irq;
hcd = usb_create_hcd(&ohci_tmio_hc_driver, &dev->dev, dev_name(&dev->dev));
if (!hcd) {
ret = -ENOMEM;