Dear Mauro, In your patch 12406 to v4l-dvb dev tree there is a small problem: -- diff -r 13a35e80e987 -r 8f9eee4fd803 linux/drivers/media/video/em28xx/em28xx-core.c --- a/linux/drivers/media/video/em28xx/em28xx-core.c Fri Aug 07 18:43:00 2009 -0300 +++ b/linux/drivers/media/video/em28xx/em28xx-core.c Sat Aug 08 03:14:55 2009 -0300 @@ -720,7 +720,10 @@ { int width, height; width = norm_maxw(dev); - height = norm_maxh(dev) >> 1; + height = norm_maxh(dev); + + if (!dev->progressive) + height >>= norm_maxh(dev); em28xx_set_outfmt(dev); -- In the line "height >>= norm_maxh(dev)" undefinedÂbehaviorÂhas been introduced. There is an attempt to shift the number to a big number of bits which is not defined by C standard and leads to unpredictable results. For example it will work on Intel because there it will translate to no shift at all which seems to be unexpected as well. But if you enable global optimization or compile this code for ARM the result will be 0. It seems like this line should look like "height = norm_maxh(dev) >> 1" -- With best regards, Vitaly Makarov -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html