Dnia sobota 09 kwiecieÅ 2011 o 18:42:40 Jiri Slaby napisaÅ(a): > On 04/09/2011 05:10 PM, Janusz Krzysztofik wrote: > > (CC: Jiri Slaby, the author of the problematic change; truncate > > subject) > > > > On Sat, 09 Apr 2011, at 09:16:24, Russell King - ARM Linux wrote: > >> On Sat, Apr 09, 2011 at 03:33:39AM +0200, Janusz Krzysztofik wrote: > >>> Since there were no actual problems reported before, I suppose > >>> the old code, which was passing to remap_pfn_range() a physical > >>> page number calculated from dma_alloc_coherent() privided > >>> dma_handle, worked correctly on all platforms actually using > >>> videobud-dma-config. > > No, it didn't when IOMMU was used. Taking into account that I'm just trying to fix a regression, and not invent a new, long term solution: are you able to name a board which a) is already supported in 2.6.39, b) is (or can be) equipped with a device supported by a V4L driver which uses videobuf-dma-config susbsystem, c) uses IOMMU? If there is one, than I agree that reverting the patch is not a good option. > Because remap_pfn_range didn't get > a physical page address. If I didn't understand it, I wouldn't try to find a solution other than reverting your patch. Thanks, Janusz -- 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
