USB: gadget: Use ERR_PTR/IS_ERR

[firefly-linux-kernel-4.4.55.git] / drivers / usb / gadget / f_audio.c

diff --git a/drivers/usb/gadget/f_audio.c b/drivers/usb/gadget/f_audio.c
index c43c89ffa2c89b07fd690afeca58cb34651b0358..0f2eee12ee9f6f1c33faa5f440ba06b5aa6d572b 100644 (file)
--- a/drivers/usb/gadget/f_audio.c
+++ b/drivers/usb/gadget/f_audio.c
@@ -252,12 +252,12 @@ static struct f_audio_buf *f_audio_buffer_alloc(int buf_size)
 
        copy_buf = kzalloc(sizeof *copy_buf, GFP_ATOMIC);
        if (!copy_buf)
-               return (struct f_audio_buf *)-ENOMEM;
+               return ERR_PTR(-ENOMEM);
 
        copy_buf->buf = kzalloc(buf_size, GFP_ATOMIC);
        if (!copy_buf->buf) {
                kfree(copy_buf);
-               return (struct f_audio_buf *)-ENOMEM;
+               return ERR_PTR(-ENOMEM);
        }
 
        return copy_buf;
@@ -332,7 +332,7 @@ static int f_audio_out_ep_complete(struct usb_ep *ep, struct usb_request *req)
                list_add_tail(&copy_buf->list, &audio->play_queue);
                schedule_work(&audio->playback_work);
                copy_buf = f_audio_buffer_alloc(audio_buf_size);
-               if (copy_buf < 0)
+               if (IS_ERR(copy_buf))
                        return -ENOMEM;
        }
 
@@ -576,6 +576,8 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
                        usb_ep_enable(out_ep, audio->out_desc);
                        out_ep->driver_data = audio;
                        audio->copy_buf = f_audio_buffer_alloc(audio_buf_size);
+                       if (IS_ERR(audio->copy_buf))
+                               return -ENOMEM;
 
                        /*
                         * allocate a bunch of read buffers