[PATCH] Revert "Input: wacom - testing result shows get_report is unnecessary."

From: Benjamin Tissoires
Date: Fri Jun 13 2014 - 16:32:28 EST


This reverts commit 1b2faaf7e219fc2905d75afcd4c815e5d39eda80.

The Intuos4 series presents a bug in which it hangs if it receives
a set feature command while switching to the enhanced mode.
This bug is triggered when plugging an Intuos 4 while having
a gnome user session up and running.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
---

Hi Aris,

actually, you bisected the bug, so can I consider that I have your signed-off-by?

Cheers,
Benjamin

drivers/input/tablet/wacom_sys.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
index 7087b33..319a3ff 100644
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -536,6 +536,9 @@ static int wacom_set_device_mode(struct usb_interface *intf, int report_id, int

error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
report_id, rep_data, length, 1);
+ if (error >= 0)
+ error = wacom_get_report(intf, WAC_HID_FEATURE_REPORT,
+ report_id, rep_data, length, 1);
} while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);

kfree(rep_data);
--
1.9.0

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