usb: gadget: u_uac1: add __user annotation

Added __user annotation to fix the following sparse warning.

drivers/usb/gadget/u_uac1.c:194:52: warning: incorrect type in argument 2 (different address spaces)
drivers/usb/gadget/u_uac1.c:194:52:    expected void const [noderef] <asn:1>*buf
drivers/usb/gadget/u_uac1.c:194:52:    got void *buf

Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/usb/gadget/u_uac1.c b/drivers/usb/gadget/u_uac1.c
index c7d460f43390..7a55fea43430 100644
--- a/drivers/usb/gadget/u_uac1.c
+++ b/drivers/usb/gadget/u_uac1.c
@@ -191,7 +191,7 @@ try_again:
         frames = bytes_to_frames(runtime, count);
         old_fs = get_fs();
         set_fs(KERNEL_DS);
-        result = snd_pcm_lib_write(snd->substream, buf, frames);
+        result = snd_pcm_lib_write(snd->substream, (void __user *)buf, frames);
         if (result != frames) {
                 ERROR(card, "Playback error: %d\n", (int)result);
                 set_fs(old_fs);