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qemu-usb: limit control transfer to 1 sec timeout

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Fix genodelabs/genode#5376
This commit is contained in:
Stefan Kalkowski 2024-11-05 13:14:43 +01:00 committed by Christian Helmuth
parent 0794d99eff
commit f886acdcc6
1 changed files with 9 additions and 1 deletions
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10
repos/libports/src/lib/qemu-usb/host.cc
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@ -274,6 +274,13 @@ class Device : public List_model<Device>::Element
struct Urb : Usb::Device::Urb struct Urb : Usb::Device::Urb
{ {
/**
* Unconditionally set control transfer timeout to 1 sec,
* otherwise it can block a device forever, as we do not
* cancel control transfers yet in this backend.
*/
enum { CONTROL_XFER_TIMEOUT = 1000 };
using Request_type = using Request_type =
Usb::Device::Packet_descriptor::Request_type::access_t; Usb::Device::Packet_descriptor::Request_type::access_t;
@ -289,7 +296,8 @@ class Device : public List_model<Device>::Element
: :
Usb::Device::Urb(device._device, request, Usb::Device::Urb(device._device, request,
(Request_type)request_type, (Request_type)request_type,
value, index, size), value, index, size,
CONTROL_XFER_TIMEOUT),
_packet(packet) { } _packet(packet) { }
}; };