Hi Hans, On Fri, Jun 22, 2012 at 2:29 PM, Hans Verkuil <hverkuil@xxxxxxxxx> wrote: > On Fri June 22 2012 10:50:23 Laurent Pinchart wrote: >> Hi Hans, >> >> On Friday 22 June 2012 09:50:44 Hans Verkuil wrote: >> > On 22/06/12 05:39, Prabhakar Lad wrote: >> > > Hi Federico, >> > > >> > > Recent patch from you (commit id a8f3c203e19b702fa5e8e83a9b6fb3c5a6d1cce4) >> > > which added cached buffer support to videobuf dma contig, is causing my >> > > driver to crash. >> > > Has this patch being tested for 'uncached' buffers ? If I replace this >> > > mapping logic with remap_pfn_range() my driver works without any crash. >> > > >> > > Or is that I am missing somewhere ? >> > >> > No, I had the same problem this week with vpif_capture. Since I was running >> > an unusual setup (a 3.0 kernel with the media subsystem patched to 3.5-rc1) >> > I didn't know whether it was caused by a mismatch between 3.0 and a 3.5 >> > media subsystem. >> > >> > I intended to investigate this next week, but now it is clear that it is >> > this patch that is causing the problem. >> >> Time to port the driver to videobuf2 ? ;-) >> >> > > That's actually something on my todo list... In fact I have ported VPIF to videobuf2, It works fine with MMAP based buffers, Its crashing for USERPTR buffers. still need to fix it :( Thx, --Prabhakar > > Regards, > > Hans -- 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
