From: Frank Schaefer <fschaefer.oss@googlemail.com>
Date: Thu, 8 Nov 2012 17:11:43 +0000 (-0300)
Subject: [media] em28xx: clear USB halt/stall condition in em28xx_init_usb_xfer when using... 
X-Git-Tag: v3.9-rc5~2^2~445
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=337fe8dad58692ac468f4139ea19624ce464d953;p=platform%2Fkernel%2Flinux-exynos.git

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

[mchehab@redhat.com: Fix a CodingStyle issue: don't break strings
 into separate lines]

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c
index d8a8e8b..6b3485d 100644
--- a/drivers/media/usb/em28xx/em28xx-core.c
+++ b/drivers/media/usb/em28xx/em28xx-core.c
@@ -1174,6 +1174,16 @@ 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);