[PATCH] usb: gadget: fix static analysis false positive

[Ahmad Fatoum]

On 32-bit systems, the 32-bit-wide buf can never exceed 0xffffffff,
so this resulted in a warning. Fix this by using upper_32_bits()
instead, which is also easier to read.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 drivers/usb/gadget/udc/fsl_udc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/fsl_udc.c b/drivers/usb/gadget/udc/fsl_udc.c
index e1d0d0b48272..30f4da0c41e7 100644
--- a/drivers/usb/gadget/udc/fsl_udc.c
+++ b/drivers/usb/gadget/udc/fsl_udc.c
@@ -780,7 +780,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req,
 
 	/* Init all of buffer page pointers */
 	buf = (unsigned long)req->req.buf;
-	if (buf > 0xffffffff) {
+	if (upper_32_bits(buf)) {
 		pr_err("Only 32bit supported\n");
 		return NULL;
 	}
-- 
2.39.5