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usb: xhci: print xhci->xhc_state when queue_command failed

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[ Upstream commit 7919407eca2ef562fa6c98c41cfdf6f6cdd69d92 ]

When encounters some errors like these:
xhci_hcd 0000:4a:00.2: xHCI dying or halted, can't queue_command
xhci_hcd 0000:4a:00.2: FIXME: allocate a command ring segment
usb usb5-port6: couldn't allocate usb_device

It's hard to know whether xhc_state is dying or halted. So it's better
to print xhc_state's value which can help locate the resaon of the bug.

Signed-off-by: Su Hui <suhui@nfschina.com>
Link: https://lore.kernel.org/r/20250725060117.1773770-1-suhui@nfschina.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Su Hui
2025-07-25 14:01:18 +08:00
committed by Greg Kroah-Hartman
parent d6ceeffbbf
commit 00993cf671
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/host/xhci-ring.c
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@@ -4183,7 +4183,8 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
if ((xhci->xhc_state & XHCI_STATE_DYING) ||
(xhci->xhc_state & XHCI_STATE_HALTED)) {
xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n");
xhci_dbg(xhci, "xHCI dying or halted, can't queue_command. state: 0x%x\n",
xhci->xhc_state);
return -ESHUTDOWN;
}