Commit 1272fd65 authored by Pawel Laszczak's avatar Pawel Laszczak Committed by Greg Kroah-Hartman
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usb: cdns3: Fix issue with using incorrect PCI device function 



PCI based platform can have more than two PCI functions.
USBSS PCI Glue driver during initialization should
consider only DRD/HOST/DEVICE PCI functions and
all other should be ignored. This patch adds additional
condition which causes that only DRD and HOST/DEVICE
function will be accepted.

cc: <stable@vger.kernel.org>
Fixes: 7733f6c3 ("usb: cdns3: Add Cadence USB3 DRD Driver")
Signed-off-by: default avatarPawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20230308124427.311245-1-pawell@cadence.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5bc38d33

drivers/usb/cdns3/cdns3-pci-wrap.c

+5 −0
Original line number Diff line number Diff line
@@ -60,6 +60,11 @@ static struct pci_dev *cdns3_get_second_fun(struct pci_dev *pdev) 
			return NULL;

	}



	if (func->devfn != PCI_DEV_FN_HOST_DEVICE &&

	    func->devfn != PCI_DEV_FN_OTG) {

		return NULL;

	}



	return func;

}