[PATCH for 3.2 URGENT] gspca: Fix falling back to lower isoc alt settings

[Mauro Carvalho Chehab <mchehab@redhat.com>]

The current gspca core code has a regression where it no longer properly
falls back to lower alt settings when there is not enough bandwidth.

This causes many iso based usb-1 cameras to not work when plugged
into a usb2 hub or a sandybridge chipset motherboard!

This patch fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 drivers/media/video/gspca/gspca.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 7fb90ae..c27dc09 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -988,7 +988,7 @@ retry:
 				ret = -EIO;
 				goto out;
 			}
-			alt = ep_tb[--alt_idx].alt;
+			gspca_dev->alt = ep_tb[--alt_idx].alt;
 		}
 	}
 out:
-- 
1.7.7.4

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