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 1960230146A; Tue, 26 Aug 2025 13:48:51 +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=1756216132; cv=none; b=BjTm9soCZWSKqP0YD0W1ApUAvRzljsrJ7jBp4HSeFaP/vArYctLE4QJxFSV+on1rqXuvkjB45z+SLx0+w7hzvjxlDkhwTLt1ELsm1qe7XVwk2YJ2EfvaIXclNEBNh46H9p8dNDA6Cw2SALgD+P8fTwUjFsKy3J8BisnHv2BpquE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756216132; c=relaxed/simple; bh=V84DhD5UtnA61Mmd25QrLoT3rJtXWp6tA652P1nw8Ao=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=BLbpkFd9ljIqsfzJ/62BjQ1SbAEyEyDXE0+CeqxmL+jUDxoRKIfSk3vbNWP03aoryWgVnUP9ntfeEioHCxN7Xpy8uHA3hrdcqjNpmyW4NzKc01dBLiFysJnEOjljkaV1XYE18Iw1q5FqusY0WjO/sfGhzJLRmwbo7c2PjfBGZRw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bVgoY5pU; 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="bVgoY5pU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82EC3C4CEF1; Tue, 26 Aug 2025 13:48:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756216131; bh=V84DhD5UtnA61Mmd25QrLoT3rJtXWp6tA652P1nw8Ao=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bVgoY5pUyBKpfzJjnpGMc8h8ilMBZbuF87TPvVwnyScbOLGal79Zn7yI7Ph+E9/qJ NO1kJXDRDlERJNdt2cVzg46kXwI5a4yfGCii55Qn/EFQOBBNgukdf83rFsCZ+Rn4WB Xn+ZL9OKaQ+p6LiofLAbHZTHfj67XQz5duQx7UC4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Su Hui , Sasha Levin Subject: [PATCH 5.15 295/644] usb: xhci: print xhci->xhc_state when queue_command failed Date: Tue, 26 Aug 2025 13:06:26 +0200 Message-ID: <20250826110953.694211617@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@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 5.15-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 cd94b0a4e021..626f02605192 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -4486,7 +4486,8 @@ 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