[PATCH 4.4 38/53] Input: aiptek - use descriptors of current altsetting

[Greg Kroah-Hartman]

From: Johan Hovold <johan@xxxxxxxxxx>

[ Upstream commit cfa4f6a99fb183742cace65ec551b444852b8ef6 ]

Make sure to always use the descriptors of the current alternate setting
to avoid future issues when accessing fields that may differ between
settings.

Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Acked-by: Vladis Dronov <vdronov@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20191210113737.4016-4-johan@xxxxxxxxxx
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/input/tablet/aiptek.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/tablet/aiptek.c b/drivers/input/tablet/aiptek.c
index 40a166773c1b4..142f34a0a3cb6 100644
--- a/drivers/input/tablet/aiptek.c
+++ b/drivers/input/tablet/aiptek.c
@@ -1731,7 +1731,7 @@ aiptek_probe(struct usb_interface *intf, const struct usb_device_id *id)
 	aiptek->inputdev = inputdev;
 	aiptek->usbdev = usbdev;
 	aiptek->intf = intf;
-	aiptek->ifnum = intf->altsetting[0].desc.bInterfaceNumber;
+	aiptek->ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
 	aiptek->inDelay = 0;
 	aiptek->endDelay = 0;
 	aiptek->previousJitterable = 0;
-- 
2.20.1