From 7dd8be6478583a8ea4a17a24967dafd63c651eed Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Thu, 9 Sep 2021 12:11:59 +0530 Subject: [PATCH] xhci: Set HCD flag to defer primary roothub registration commit b7a0a792f864583207c593b50fd1b752ed89f4c1 upstream. Set "HCD_FLAG_DEFER_RH_REGISTER" to hcd->flags in xhci_run() to defer registering primary roothub in usb_add_hcd(). This will make sure both primary roothub and secondary roothub will be registered along with the second HCD. This is required for cold plugged USB devices to be detected in certain PCIe USB cards (like Inateck USB card connected to AM64 EVM or J7200 EVM). CC: stable@vger.kernel.org # 5.4+ Suggested-by: Mathias Nyman Tested-by: Chris Chiu Signed-off-by: Kishon Vijay Abraham I Link: https://lore.kernel.org/r/20210909064200.16216-3-kishon@ti.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 505da4999e208..02a2afd130eb6 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -693,6 +693,7 @@ int xhci_run(struct usb_hcd *hcd) if (ret) xhci_free_command(xhci, command); } + set_bit(HCD_FLAG_DEFER_RH_REGISTER, &hcd->flags); xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Finished xhci_run for USB2 roothub"); -- 2.39.5