From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DFCC5335BD6; Mon, 18 Aug 2025 13:20:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755523244; cv=none; b=BR07E1lUD0JYhBc0CvbMY6lFNsmiMP5pctva5U6oPLNxo6tdBubUJ2pdUewC3FSOUeDymwMQNfGHtYbdk021WCPKXQb9dKCn9+y6TDLfSCG/MLXSsfwQXGdDIVjlaTYfUKaXmVCJssrHBJzWX36XKxkTbj+SSj0fV6Y5NW2fO+8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755523244; c=relaxed/simple; bh=rDmwndWNjmpZkeDs0sRpHuxQzLJVQcJ0EZa9mGM5SXU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=F4QfoJkVs9YXhXMew4yNUykYGYEwEJZbHsxOELV/F17YfOk82Ab8glXlxD3/4Il2Ll8UCk2K+RSzlWkgTLTvzsCJNAgoIfdqAate9Xj1Sc7erR5KfYj4kR/1TS6poLjIu/rM7MGJOaBy06CpTDwxtk7U7uILbaDQnWJSgByAz7s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bwiu8uIA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="bwiu8uIA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D179C4CEEB; Mon, 18 Aug 2025 13:20:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755523243; bh=rDmwndWNjmpZkeDs0sRpHuxQzLJVQcJ0EZa9mGM5SXU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bwiu8uIAh30jE2Bm7xSoIsL7/22fB29iFzo6Zcm81fLSNFzsj86Q1yeH0eYFWBP9+ ThRughGYymB/t0sKQTxC0acG/v2ddAts2LfH1eGIbHmKEvAe5UBE163CWuikkkWWAE QiwLigFF7EDT/nXZF/VslN9HYTgnbKlVGzq/3JmY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Su Hui , Sasha Levin Subject: [PATCH 6.15 112/515] usb: xhci: print xhci->xhc_state when queue_command failed Date: Mon, 18 Aug 2025 14:41:38 +0200 Message-ID: <20250818124502.666678887@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818124458.334548733@linuxfoundation.org> References: <20250818124458.334548733@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Su Hui [ 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 Link: https://lore.kernel.org/r/20250725060117.1773770-1-suhui@nfschina.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/host/xhci-ring.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index b720e04ce7d8..8be033f1877d 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -4337,7 +4337,8 @@ 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; } -- 2.39.5