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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2017-07-11 10:02:18 -0700
committerJiri Kosina <jkosina@suse.cz>2017-07-13 16:48:29 +0200
commit4cf56a89c696e66d10612b43b7e95852611e76c2 (patch)
treec042e7652cef6d50c5b6c2bef44809c9debbd9b3 /drivers/hid
parenta91ab911df51ac364e594d5950ed508d91091498 (diff)
downloadop-kernel-dev-4cf56a89c696e66d10612b43b7e95852611e76c2.zip
op-kernel-dev-4cf56a89c696e66d10612b43b7e95852611e76c2.tar.gz
HID: multitouch: do not blindly set EV_KEY or EV_ABS bits
Now that input core insists on having dev->absinfo when device claims to generate EV_ABS in its dev->evbit, we should not be blindly setting that bit. The code in question might have been needed before input_set_abs_params() started setting EV_ABS in device's evbit, but not anymore, and is now breaking devices such as SMART SPNL-6075 Touchscreen. Fixes: 6ecfe51b4082 ("Input: refuse to register absolute devices ...") Reported-by: Matthias Fend <Matthias.Fend@wolfvision.net> Tested-by: Matthias Fend <Matthias.Fend@wolfvision.net> Cc: stable@vger.kernel.org Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-multitouch.c16
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index f3e35e7..aff20f4 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -620,16 +620,6 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
return 0;
}
-static int mt_touch_input_mapped(struct hid_device *hdev, struct hid_input *hi,
- struct hid_field *field, struct hid_usage *usage,
- unsigned long **bit, int *max)
-{
- if (usage->type == EV_KEY || usage->type == EV_ABS)
- set_bit(usage->type, hi->input->evbit);
-
- return -1;
-}
-
static int mt_compute_slot(struct mt_device *td, struct input_dev *input)
{
__s32 quirks = td->mtclass.quirks;
@@ -969,8 +959,10 @@ static int mt_input_mapped(struct hid_device *hdev, struct hid_input *hi,
return 0;
if (field->application == HID_DG_TOUCHSCREEN ||
- field->application == HID_DG_TOUCHPAD)
- return mt_touch_input_mapped(hdev, hi, field, usage, bit, max);
+ field->application == HID_DG_TOUCHPAD) {
+ /* We own these mappings, tell hid-input to ignore them */
+ return -1;
+ }
/* let hid-core decide for the others */
return 0;
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