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HID: rmi: print an error if F11 is not found instead of stopping the device 

Currently rmi_probe will return -EIO if the device doesn't report that it has F11.
This would indicate that something happened and the device is in the bootloader.
We can recover the device using a userspace firmware update tool, but it needs
access to the device through the hidraw device file. If the probe returns -EIO
the hidraw device won't be created. So instead of failing the probe, just print
an error message, but leave the device accessible from userspace.

Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Andrew Duggan 2014-08-06 13:37:40 -07:00 committed by Jiri Kosina
parent 5be5db24fc
commit daebdd7ee3
1 changed files with 9 additions and 4 deletions
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13
drivers/hid/hid-rmi.c
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@ -909,10 +909,15 @@ static int rmi_probe(struct hid_device *hdev, const struct hid_device_id *id)
return ret;
}
if (!test_bit(RMI_STARTED, &data->flags)) {
hid_hw_stop(hdev);
return -EIO;
}
if (!test_bit(RMI_STARTED, &data->flags))
/*
* The device maybe in the bootloader if rmi_input_configured
* failed to find F11 in the PDT. Print an error, but don't
* return an error from rmi_probe so that hidraw will be
* accessible from userspace. That way a userspace tool
* can be used to reload working firmware on the touchpad.
*/
hid_err(hdev, "Device failed to be properly configured\n");
return 0;
}