ThinkPad X60 Tablet PC (pen only device) sometime posts
packets that are larger than W8001_PKTLEN_TPCPEN.
NOTE: The w8001 struct has no touch_dev member in 2.6.36
or 2.6.30.
Reported-by: Chris J Arges <christopherar...@gmail.com>
Tested-by: Chris J Arges <christopherar...@gmail.com>
Signed-off-by: Ping Cheng <pi...@wacom.com>
Reviewed-by: Peter Hutterer <peter.hutte...@who-t.net>
Cc: sta...@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torok...@gmail.com>
[jason.gere...@wacom.com: Imported into input-wacom repository (9e72ac7)]
Signed-off-by: Jason Gerecke <jason.gere...@wacom.com>
[aaron.sko...@wacom.com: backported from input-wacom repository (0ae81e81)]
Signed-off-by: Aaron Skomra <aaron.sko...@wacom.com>
---
2.6.38/wacom_w8001.c | 9 +++++++++
3.7/wacom_w8001.c | 9 +++++++++
2 files changed, 18 insertions(+)
diff --git a/2.6.38/wacom_w8001.c b/2.6.38/wacom_w8001.c
index ed04bb9..de7b8ef 100644
--- a/2.6.38/wacom_w8001.c
+++ b/2.6.38/wacom_w8001.c
@@ -339,6 +339,15 @@ static irqreturn_t w8001_interrupt(struct serio *serio,
w8001->idx = 0;
parse_multi_touch(w8001);
break;
+
+ default:
+ /*
+ * ThinkPad X60 Tablet PC (pen only device) sometimes
+ * sends invalid data packets that are larger than
+ * W8001_PKTLEN_TPCPEN. Let's start over again.
+ */
+ if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1)
+ w8001->idx = 0;
}
return IRQ_HANDLED;
diff --git a/3.7/wacom_w8001.c b/3.7/wacom_w8001.c
index b1b4127..0c9191c 100644
--- a/3.7/wacom_w8001.c
+++ b/3.7/wacom_w8001.c
@@ -339,6 +339,15 @@ static irqreturn_t w8001_interrupt(struct serio *serio,
w8001->idx = 0;
parse_multi_touch(w8001);
break;
+
+ default:
+ /*
+ * ThinkPad X60 Tablet PC (pen only device) sometimes
+ * sends invalid data packets that are larger than
+ * W8001_PKTLEN_TPCPEN. Let's start over again.
+ */
+ if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1)
+ w8001->idx = 0;
}
return IRQ_HANDLED;
--
1.9.1
------------------------------------------------------------------------------
What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic
patterns at an interface-level. Reveals which users, apps, and protocols are
consuming the most bandwidth. Provides multi-vendor support for NetFlow,
J-Flow, sFlow and other flows. Make informed decisions using capacity planning
reports.http://sdm.link/zohodev2dev
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