blob: 2510dc2b0492ec6677ba4e7c3667cff41716d736 [file] [log] [blame]
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Fri, 15 Jul 2016 14:15:47 +0300
Subject: usb: gadget: fsl_qe_udc: signedness bug in qe_get_frame()
commit f4693b08cc901912a87369c46537b94ed4084ea0 upstream.
We can't assign -EINVAL to a u16.
Fixes: 3948f0e0c999 ('usb: add Freescale QE/CPM USB peripheral controller driver')
Acked-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
[bwh: Backported to 3.2: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/usb/gadget/fsl_qe_udc.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -1883,11 +1883,8 @@ static int qe_get_frame(struct usb_gadge
tmp = in_be16(&udc_controller->usb_param->frame_n);
if (tmp & 0x8000)
- tmp = tmp & 0x07ff;
- else
- tmp = -EINVAL;
-
- return (int)tmp;
+ return tmp & 0x07ff;
+ return -EINVAL;
}
/* Tries to wake up the host connected to this gadget