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When creating the low-level hidraw device, the reference to steam_device
was stored using hid_set_drvdata(). But this value is not guaranteed to
be kept when set before calling probe. If this pointer is reset, it
crashes when opening the emulated hidraw device.
It looks like hid_set_drvdata() is for users "avobe" this hid_device,
while hid_device.driver_data it for users "below" this one.
In this case, we are creating a virtual hidraw device, so we must use
hid_device.driver_data.
Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
Tested-by: Mariusz Ceier <mceier+kernel@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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->product, ->version and ->type fields in the client struct were left out
unitialized from the hid device fields; fix that.
Reported-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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The wireless Steam Controller is battery operated, so add the battery
device and power information.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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There are two ways to connect the Steam Controller: directly to the USB
or with the USB wireless adapter. Both methods are similar, but the
wireless adapter can connect up to 4 devices at the same time.
The wired device will appear as 3 interfaces: a virtual mouse, a virtual
keyboard and a custom HID device.
The wireless device will appear as 5 interfaces: a virtual keyboard and
4 custom HID devices, that will remain silent until a device is actually
connected.
The custom HID device has a report descriptor with all vendor specific
usages, so the hid-generic is not very useful. In a PC/SteamBox Valve
Steam Client provices a software translation by using hidraw and a
creates a uinput virtual gamepad and XTest keyboard/mouse.
This driver intercepts the hidraw usage, so it can get out of the way
when the Steam Client is in use.
Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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