[PATCH v2 2/2] media: lmedm04: Move interrupt buffer to priv buffer.

[Malcolm Priestley]

Interrupt is always present throughout life time of driver and
there is no dma element move this buffer to private area of driver.

Signed-off-by: Malcolm Priestley <tvbox...@gmail.com>
---
v2 removed the need for DMA transfer flags as per Sean 

 drivers/media/usb/dvb-usb-v2/lmedm04.c | 28 +++++++++-----------------
 1 file changed, 9 insertions(+), 19 deletions(-)

diff --git a/drivers/media/usb/dvb-usb-v2/lmedm04.c 
b/drivers/media/usb/dvb-usb-v2/lmedm04.c
index cba782261a6f..602013cf3e69 100644
--- a/drivers/media/usb/dvb-usb-v2/lmedm04.c
+++ b/drivers/media/usb/dvb-usb-v2/lmedm04.c
@@ -134,7 +134,7 @@ struct lme2510_state {
        u8 stream_on;
        u8 pid_size;
        u8 pid_off;
-       void *buffer;
+       u8 int_buffer[128];
        struct urb *lme_urb;
        u8 usb_buffer[64];
        /* Frontend original calls */
@@ -388,20 +388,14 @@ static int lme2510_int_read(struct dvb_usb_adapter *adap)
        if (lme_int->lme_urb == NULL)
                        return -ENOMEM;
 
-       lme_int->buffer = usb_alloc_coherent(d->udev, 128, GFP_ATOMIC,
-                                       &lme_int->lme_urb->transfer_dma);
-
-       if (lme_int->buffer == NULL)
-                       return -ENOMEM;
-
        usb_fill_int_urb(lme_int->lme_urb,
-                               d->udev,
-                               usb_rcvintpipe(d->udev, 0xa),
-                               lme_int->buffer,
-                               128,
-                               lme2510_int_response,
-                               adap,
-                               8);
+                        d->udev,
+                        usb_rcvintpipe(d->udev, 0xa),
+                        lme_int->int_buffer,
+                        sizeof(lme_int->int_buffer),
+                        lme2510_int_response,
+                        adap,
+                        8);
 
        /* Quirk of pipe reporting PIPE_BULK but behaves as interrupt */
        ep = usb_pipe_endpoint(d->udev, lme_int->lme_urb->pipe);
@@ -409,8 +403,6 @@ static int lme2510_int_read(struct dvb_usb_adapter *adap)
        if (usb_endpoint_type(&ep->desc) == USB_ENDPOINT_XFER_BULK)
                lme_int->lme_urb->pipe = usb_rcvbulkpipe(d->udev, 0xa),
 
-       lme_int->lme_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
        usb_submit_urb(lme_int->lme_urb, GFP_ATOMIC);
        info("INT Interrupt Service Started");
 
@@ -1225,10 +1217,8 @@ static void lme2510_exit(struct dvb_usb_device *d)
                lme2510_kill_urb(&adap->stream);
        }
 
-       if (st->lme_urb != NULL) {
+       if (st->lme_urb) {
                usb_kill_urb(st->lme_urb);
-               usb_free_coherent(d->udev, 128, st->buffer,
-                                 st->lme_urb->transfer_dma);
                usb_free_urb(st->lme_urb);
                info("Interrupt Service Stopped");
        }
-- 
2.19.1