[PATCH 11/23] em28xx: clear USB halt/stall condition in em28xx_init_usb_xfer when using bulk transfers

[Frank Schäfer]

Signed-off-by: Frank Schäfer <fschaefer....@googlemail.com>
---
 drivers/media/usb/em28xx/em28xx-core.c |   11 +++++++++++
 1 Datei geändert, 11 Zeilen hinzugefügt(+)

diff --git a/drivers/media/usb/em28xx/em28xx-core.c 
b/drivers/media/usb/em28xx/em28xx-core.c
index d8a8e8b..8b8f783 100644
--- a/drivers/media/usb/em28xx/em28xx-core.c
+++ b/drivers/media/usb/em28xx/em28xx-core.c
@@ -1174,6 +1174,17 @@ int em28xx_init_usb_xfer(struct em28xx *dev, enum 
em28xx_mode mode,
                        return rc;
        }
 
+       if (xfer_bulk) {
+               rc = usb_clear_halt(dev->udev, usb_bufs->urb[0]->pipe);
+               if (rc < 0) {
+                       em28xx_err("failed to clear USB bulk endpoint "
+                                  "stall/halt condition (error=%i)\n",
+                                  rc);
+                       em28xx_uninit_usb_xfer(dev, mode);
+                       return rc;
+               }
+       }
+
        init_waitqueue_head(&dma_q->wq);
        init_waitqueue_head(&vbi_dma_q->wq);
 
-- 
1.7.10.4

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