From: Jamin Lin <jamin_lin@aspeedtech.com>
To: "berrange@redhat.com" <berrange@redhat.com>,
"junjie.cao@linux.dev" <junjie.cao@linux.dev>,
"kraxel@redhat.com" <kraxel@redhat.com>,
"marcandre.lureau@redhat.com" <marcandre.lureau@redhat.com>,
"clg@kaod.org" <clg@kaod.org>,
"junjie.cao@intel.com" <junjie.cao@intel.com>,
"Pierrick Bouvier" <pierrick.bouvier@oss.qualcomm.com>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Kane Chen" <kane_chen@aspeedtech.com>,
"Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>,
"Tyrone Ting" <kfting@nuvoton.com>,
"Hao Wu" <wuhaotsh@google.com>, "Zhao Liu" <zhao1.liu@intel.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Helge Deller" <deller@gmx.de>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Anthony PERARD" <anthony@xenproject.org>,
"Edgar E. Iglesias" <edgar.iglesias@gmail.com>,
"open list:All patches CC here" <qemu-devel@nongnu.org>,
"open list:ASPEED BMCs" <qemu-arm@nongnu.org>,
"open list:X86 Xen CPUs" <xen-devel@lists.xenproject.org>
Cc: Jamin Lin <jamin_lin@aspeedtech.com>, Troy Lee <troy_lee@aspeedtech.com>
Subject: [PATCH v9 07/19] hw/usb/xen-usb: Do not insert an automatic hub
Date: Tue, 10 Nov 2026 07:28:29 +0000 [thread overview]
Message-ID: <20261110072818.2883349-8-jamin_lin@aspeedtech.com> (raw)
In-Reply-To: <20261110072818.2883349-1-jamin_lin@aspeedtech.com>
xen-usb gives every device a port number. usb_claim_port() then uses
that port, and never reaches the automatic hub.
Set auto_hub to false. Every bus creator then sets the flag itself,
and usb_bus_new() can stop setting a default.
Suggested-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
hw/usb/xen-usb.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/usb/xen-usb.c b/hw/usb/xen-usb.c
index caf9efbb77..5d1dbe6b1b 100644
--- a/hw/usb/xen-usb.c
+++ b/hw/usb/xen-usb.c
@@ -1023,6 +1023,7 @@ static void usbback_alloc(struct XenLegacyDevice *xendev)
usb_bus_new(&usbif->bus, sizeof(usbif->bus), &xen_usb_bus_ops,
DEVICE(xendev));
+ usbif->bus.auto_hub = false;
for (i = 0; i < USBBACK_MAXPORTS; i++) {
p = &(usbif->ports[i].port);
usb_register_port(&usbif->bus, p, usbif, i, &xen_usb_port_ops,
--
2.43.0
next prev parent reply other threads:[~2026-11-10 7:29 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-10 7:28 [PATCH v9 00/19] hw/usb: Add a usbredir server transport Jamin Lin
2026-11-10 7:28 ` [PATCH v9 01/19] hw/usb/bus: Add an auto-hub flag to the USB bus Jamin Lin
2026-11-10 7:28 ` [PATCH v9 02/19] hw/usb/hcd-xhci: Add an auto-hub property and leave it off Jamin Lin
2026-11-10 7:28 ` [PATCH v9 03/19] hw/usb/hcd-ehci: " Jamin Lin
2026-11-10 7:28 ` [PATCH v9 04/19] hw/usb/hcd-uhci: " Jamin Lin
2026-11-10 7:28 ` [PATCH v9 05/19] hw/usb/hcd-ohci: " Jamin Lin
2026-11-10 7:28 ` [PATCH v9 06/19] hw/usb/hcd-dwc2: " Jamin Lin
2026-11-10 7:28 ` Jamin Lin [this message]
2026-11-10 7:28 ` [PATCH v9 08/19] hw/arm/npcm7xx: Keep the automatic hub Jamin Lin
2026-11-10 7:28 ` [PATCH v9 09/19] hw/usb/bus: Turn off the automatic hub by default Jamin Lin
2026-11-10 7:28 ` [PATCH v9 10/19] docs/system/devices/usb: Note the automatic hub change Jamin Lin
2026-11-10 7:28 ` [PATCH v9 11/19] hw/usb/redirect-server: Add a usbredir server device Jamin Lin
2026-11-10 7:28 ` [PATCH v9 12/19] hw/usb/redirect-server: Connect usbredirparser to a chardev Jamin Lin
2026-11-10 7:28 ` [PATCH v9 13/19] hw/usb/redirect-server: Announce the exported device Jamin Lin
2026-11-10 7:28 ` [PATCH v9 14/19] hw/usb/redirect-server: Implement control transfers Jamin Lin
2026-11-10 7:28 ` [PATCH v9 15/19] hw/usb/redirect-server: Send device and interface information Jamin Lin
2026-11-10 7:28 ` [PATCH v9 16/19] hw/usb/redirect-server: Implement bulk and interrupt transfers Jamin Lin
2026-11-10 7:28 ` [PATCH v9 17/19] hw/usb/redirect-server: Stream interrupt IN endpoints Jamin Lin
2026-11-10 7:28 ` [PATCH v9 18/19] hw/usb/redirect-server: Implement isochronous OUT transfers Jamin Lin
2026-11-10 7:28 ` [PATCH v9 19/19] hw/arm/aspeed: Enable the usbredir server transport Jamin Lin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20261110072818.2883349-8-jamin_lin@aspeedtech.com \
--to=jamin_lin@aspeedtech.com \
--cc=anthony@xenproject.org \
--cc=berrange@redhat.com \
--cc=clg@kaod.org \
--cc=deller@gmx.de \
--cc=edgar.iglesias@gmail.com \
--cc=junjie.cao@intel.com \
--cc=junjie.cao@linux.dev \
--cc=kane_chen@aspeedtech.com \
--cc=kfting@nuvoton.com \
--cc=kraxel@redhat.com \
--cc=marcandre.lureau@redhat.com \
--cc=peter.maydell@linaro.org \
--cc=philmd@oss.qualcomm.com \
--cc=pierrick.bouvier@oss.qualcomm.com \
--cc=qemu-arm@nongnu.org \
--cc=qemu-devel@nongnu.org \
--cc=richard.henderson@linaro.org \
--cc=sstabellini@kernel.org \
--cc=troy_lee@aspeedtech.com \
--cc=wuhaotsh@google.com \
--cc=xen-devel@lists.xenproject.org \
--cc=zhao1.liu@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox