From: Tim Sell <Timothy.Sell@xxxxxxxxxx>
This commit sanity checks so that if a change resolution request is ever
received for a non-mouse device, that an error message will be logged and
the message will be ignored.
Signed-off-by: Tim Sell <Timothy.Sell@xxxxxxxxxx>
Signed-off-by: Benjamin Romer <benjamin.romer@xxxxxxxxxx>
---
drivers/staging/unisys/visorinput/visorinput.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/staging/unisys/visorinput/visorinput.c b/drivers/staging/unisys/visorinput/visorinput.c
index cbca2dc..40b32b7 100644
--- a/drivers/staging/unisys/visorinput/visorinput.c
+++ b/drivers/staging/unisys/visorinput/visorinput.c
@@ -100,6 +100,7 @@ struct change_resolution_work {
struct visorinput_devdata {
struct kref kref;
struct visor_device *dev;
+ enum visorinput_device_type devtype;
struct rw_semaphore lock_visor_dev; /* lock for dev */
struct input_dev *visorinput_dev;
bool paused;
@@ -472,6 +473,7 @@ devdata_create(struct visor_device *dev, enum visorinput_device_type devtype)
if (!devdata)
return NULL;
devdata->dev = dev;
+ devdata->devtype = devtype;
devdata->wq = alloc_ordered_workqueue("visorinput", 0);
INIT_WORK(&devdata->change_resolution_work_data.work,
async_change_resolution);
@@ -739,6 +741,11 @@ visorinput_channel_interrupt(struct visor_device *dev)
input_sync(visorinput_dev);
break;
case inputaction_set_max_xy:
+ if (devdata->devtype != visorinput_mouse) {
+ dev_err(&dev->device,
+ "mouse resolution change for NON-mouse device!\n");
+ continue;
+ }
/*
* we can NOT handle this inline, because this may go
* thru a close() path, which will attempt to stop the
--
2.1.4
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