5.4-stable review patch. If anyone has any objections, please let me know.
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From: Mario Limonciello mario.limonciello@amd.com
[ Upstream commit 65fc0fc137b5da3ee1f4ca4f61050fcb203d7582 ]
When a USB4 dock is unplugged from a system it won't respond to ring events. The PCI core handles the surprise removal event and notifies all PCI drivers. The XHCI PCI driver sets a flag that the device is being removed, and when the device stops responding a flag is also added to indicate it's dying.
When that flag is set don't bother to show warnings about a missing controller.
Signed-off-by: Mario Limonciello mario.limonciello@amd.com Signed-off-by: Mathias Nyman mathias.nyman@linux.intel.com Acked-by: Mathias Nyman mathias.nyman@linux.intel.com Link: https://lore.kernel.org/r/20250717073107.488599-3-mathias.nyman@linux.intel.... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/host/xhci.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 3383d7f0c88f..dcda4d7c2b75 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -118,7 +118,8 @@ int xhci_halt(struct xhci_hcd *xhci) ret = xhci_handshake(&xhci->op_regs->status, STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC); if (ret) { - xhci_warn(xhci, "Host halt failed, %d\n", ret); + if (!(xhci->xhc_state & XHCI_STATE_DYING)) + xhci_warn(xhci, "Host halt failed, %d\n", ret); return ret; } xhci->xhc_state |= XHCI_STATE_HALTED; @@ -175,7 +176,8 @@ int xhci_reset(struct xhci_hcd *xhci, u64 timeout_us) state = readl(&xhci->op_regs->status);
if (state == ~(u32)0) { - xhci_warn(xhci, "Host not accessible, reset failed.\n"); + if (!(xhci->xhc_state & XHCI_STATE_DYING)) + xhci_warn(xhci, "Host not accessible, reset failed.\n"); return -ENODEV; }