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authorPeter Maydell <peter.maydell@linaro.org>2019-08-22 15:10:51 +0100
committerPeter Maydell <peter.maydell@linaro.org>2019-08-22 15:10:51 +0100
commit4a71d0af7b9c4ab861c9db2111db73771999c81b (patch)
tree4f472d6356a0ab976e78786620915d6761c39a75 /qemu-options.hx
parentd86766a9d0e5c4d9cfb2186bf0b7a6f0f17e1831 (diff)
parent1be344b7ad25d572dadeee46d80f0103354352b2 (diff)
Merge remote-tracking branch 'remotes/kraxel/tags/usb-20190822-pull-request' into staging
usb: bugfixes and minor improvements. # gpg: Signature made Thu 22 Aug 2019 07:52:32 BST # gpg: using RSA key 4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full] # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full] # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full] # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/usb-20190822-pull-request: ehci: fix queue->dev null ptr dereference usb: reword -usb command-line option and mention xHCI xhci: Add No Op Command usb-redir: merge interrupt packets usbredir: fix buffer-overflow on vmload Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'qemu-options.hx')
-rw-r--r--qemu-options.hx7
1 files changed, 5 insertions, 2 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index a308e5f5aa..ea0638e92d 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1436,12 +1436,15 @@ STEXI
ETEXI
DEF("usb", 0, QEMU_OPTION_usb,
- "-usb enable the USB driver (if it is not used by default yet)\n",
+ "-usb enable on-board USB host controller (if not enabled by default)\n",
QEMU_ARCH_ALL)
STEXI
@item -usb
@findex -usb
-Enable the USB driver (if it is not used by default yet).
+Enable USB emulation on machine types with an on-board USB host controller (if
+not enabled by default). Note that on-board USB host controllers may not
+support USB 3.0. In this case @option{-device qemu-xhci} can be used instead
+on machines with PCI.
ETEXI
DEF("usbdevice", HAS_ARG, QEMU_OPTION_usbdevice,