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From: Kishon Vijay Abraham I <kishon@ti.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Alan Stern <stern@rowland.harvard.edu>
Cc: <linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<chris.chiu@canonical.com>
Subject: [RFC PATCH 5/5] xhci-pci: Use flag to not register roothub while adding primary HCD
Date: Tue, 24 Aug 2021 16:23:02 +0530	[thread overview]
Message-ID: <20210824105302.25382-6-kishon@ti.com> (raw)
In-Reply-To: <20210824105302.25382-1-kishon@ti.com>

Invoke __usb_hcd_pci_probe() without setting "register_hub" so that
primary roothub is not registered here. Instead it will be registered
along with secondary roothub. This is required for cold plugged USB
devices to be detected in certain PCIe USB cards (like Inateck USB
card).

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 drivers/usb/host/xhci-pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index 1c9a7957c45c..7734ff13aea9 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -397,7 +397,7 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	 * to say USB 2.0, but I'm not sure what the implications would be in
 	 * the other parts of the HCD code.
 	 */
-	retval = usb_hcd_pci_probe(dev, id, &xhci_pci_hc_driver);
+	retval = __usb_hcd_pci_probe(dev, id, &xhci_pci_hc_driver, 0);
 
 	if (retval)
 		goto put_runtime_pm;
-- 
2.17.1


      parent reply	other threads:[~2021-08-24 10:53 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-24 10:52 [RFC PATCH 0/5] Fix cold plugged USB device on certain PCIe USB cards Kishon Vijay Abraham I
2021-08-24 10:52 ` [RFC PATCH 1/5] usb: core: hcd: Modularize HCD stop configuration in usb_stop_hcd() Kishon Vijay Abraham I
2021-08-24 13:06   ` Greg Kroah-Hartman
2021-08-24 15:18     ` Kishon Vijay Abraham I
2021-08-26 11:14       ` Greg Kroah-Hartman
2021-08-24 10:52 ` [RFC PATCH 2/5] usb: core: hcd: Let usb_add_hcd() indicate if roothub has to be registered Kishon Vijay Abraham I
2021-08-24 13:08   ` Greg Kroah-Hartman
2021-08-24 14:56   ` Alan Stern
2021-08-24 10:53 ` [RFC PATCH 3/5] usb: core: hcd: Add support for registering secondary RH along with primary HCD Kishon Vijay Abraham I
2021-08-24 11:55   ` Mathias Nyman
2021-08-24 10:53 ` [RFC PATCH 4/5] usb: core: hcd-pci: Let usb_hcd_pci_probe() indicate if RH has to be registered Kishon Vijay Abraham I
2021-08-24 13:09   ` Greg Kroah-Hartman
2021-08-24 10:53 ` Kishon Vijay Abraham I [this message]

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