Input: aiptek - put sensible warnings in probe
Added warnings to the points where the tablet probe may fail
Signed-off-by: Rene van Paassen <rene.vanpaassen@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/tablet/aiptek.c b/drivers/input/tablet/aiptek.c
index 8c62afe..7fb15af 100644
--- a/drivers/input/tablet/aiptek.c
+++ b/drivers/input/tablet/aiptek.c
@@ -1670,17 +1670,23 @@
aiptek = kzalloc(sizeof(struct aiptek), GFP_KERNEL);
inputdev = input_allocate_device();
- if (!aiptek || !inputdev)
+ if (!aiptek || !inputdev) {
+ warn("aiptek: cannot allocate memory or input device");
goto fail1;
+ }
aiptek->data = usb_buffer_alloc(usbdev, AIPTEK_PACKET_LENGTH,
GFP_ATOMIC, &aiptek->data_dma);
- if (!aiptek->data)
+ if (!aiptek->data) {
+ warn("aiptek: cannot allocate usb buffer");
goto fail1;
+ }
aiptek->urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!aiptek->urb)
+ if (!aiptek->urb) {
+ warn("aiptek: cannot allocate urb");
goto fail2;
+ }
aiptek->inputdev = inputdev;
aiptek->usbdev = usbdev;
@@ -1807,6 +1813,13 @@
}
}
+ /* Murphy says that some day someone will have a tablet that fails the
+ above test. That's you, Frederic Rodrigo */
+ if (i == ARRAY_SIZE(speeds)) {
+ info("input: Aiptek tried all speeds, no sane response");
+ goto fail2;
+ }
+
/* Associate this driver's struct with the usb interface.
*/
usb_set_intfdata(intf, aiptek);
@@ -1814,15 +1827,18 @@
/* Set up the sysfs files
*/
err = sysfs_create_group(&intf->dev.kobj, &aiptek_attribute_group);
- if (err)
+ if (err) {
+ warn("aiptek: cannot create sysfs group err: %d", err);
goto fail3;
+ }
/* Register the tablet as an Input Device
*/
err = input_register_device(aiptek->inputdev);
- if (err)
+ if (err) {
+ warn("aiptek: input_register_device returned err: %d", err);
goto fail4;
-
+ }
return 0;
fail4: sysfs_remove_group(&intf->dev.kobj, &aiptek_attribute_group);