Thread (15 messages) 15 messages, 3 authors, 2012-08-07

Re: [RFC ebeam PATCH v3 1/2] hid: Blacklist new eBeam classic device

From: Yann Cantin <hidden>
Date: 2012-08-07 08:09:55
Also in: lkml

Le 07/08/2012 03:45, Dmitry Torokhov a écrit :
On Tue, Aug 07, 2012 at 03:21:45AM +0200, Yann Cantin wrote:
quoted
Le 07/08/2012 00:07, Dmitry Torokhov a écrit :
quoted
On Monday, August 06, 2012 02:43:40 PM Greg KH wrote:
quoted
On Mon, Aug 06, 2012 at 11:21:43PM +0200, Yann Cantin wrote:
quoted
Signed-off-by: Yann Cantin <redacted>
---

 drivers/hid/hid-core.c |    3 +++
 drivers/hid/hid-ids.h  |    3 +++
 2 files changed, 6 insertions(+)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 60ea284..b1ed8ee 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1908,6 +1908,9 @@ static const struct hid_device_id hid_ignore_list[]
= {> 
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20)
 	},
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },

+#if defined(CONFIG_INPUT_EBEAM_USB)
+	{ HID_USB_DEVICE(USB_VENDOR_ID_EFI, USB_DEVICE_ID_EFI_CLASSIC) },
+#endif
Why is this #if in here?  Just always do it, how could it not be
defined?
User might disable the driver and CONFIG_INPUT_EBEAM_USB will not be
set. But I agree, since the device is unusable with generic HID driver
there is no point in doing this conditionally.
There's a closed-source user-space stack (libusb based daemon + xorg driver
+ wine apps) provided for some distro (Ubuntu 10.04, works on mandriva 2010,
maybe others but break on recent xorg).

I don't know exactly what to do : i don't want to break hypothetical support,
even proprietary.
Leaving the choice at kernel compile time seems to be safer, no ?
If they are using libusb that means that they use userspace solution and
do not require HID or any other in-kernel driver. They should still be
able to claim the port even if your driver is in use.
Ok, that solve one of my issue.
But if the driver isn't built, there will be absolutely no kernel support,
even basic hiddev/hidraw. Is there a kernel policy for that situation ?

-- 
Yann Cantin
A4FEB47F
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