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Input: aiptek - put sensible warnings in probe

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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>
This commit is contained in:
Rene van Paassen 2007-05-21 00:31:59 -04:00 committed by Dmitry Torokhov
parent 1a54f49e89
commit 6125a40035
1 changed files with 22 additions and 6 deletions
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28
drivers/input/tablet/aiptek.c
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@ -1670,17 +1670,23 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
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 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
}
}
/* 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 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
/* 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);