USB: gadget: f_audio_source: Fix error handling and increase packet size

Fixes watchdog reset on USB disconnect
Larger packet size fixes performance in fullspeed mode

Signed-off-by: Mike Lockwood <lockwood@google.com>

diff --git a/drivers/usb/gadget/f_audio_source.c b/drivers/usb/gadget/f_audio_source.c
index 23a75117124f1b2cd9c503a0951eda0d35b1746c..ba8e007c7969ca8f0228358c474564f4392ff7a4 100644 (file)
--- a/drivers/usb/gadget/f_audio_source.c
+++ b/drivers/usb/gadget/f_audio_source.c
@@ -22,11 +22,9 @@
 #include <sound/pcm.h>
 
 #define SAMPLE_RATE 44100
-/* Each frame is two 16 bit integers (one per channel) */
-#define BYTES_PER_FRAME 4
 #define FRAMES_PER_MSEC (SAMPLE_RATE / 1000)
 
-#define IN_EP_MAX_PACKET_SIZE 256
+#define IN_EP_MAX_PACKET_SIZE 384
 
 /* Number of requests to allocate */
 #define IN_EP_REQ_COUNT 4
@@ -414,7 +412,7 @@ static void audio_data_complete(struct usb_ep *ep, struct usb_request *req)
 
        audio_req_put(audio, req);
 
-       if (!audio->buffer_start)
+       if (!audio->buffer_start || req->status)
                return;
 
        audio->period_offset += req->actual;