> -----Original Message----- > From: Scott Jiang [mailto:scott.jiang.li...@gmail.com] > Sent: Friday, September 14, 2012 2:53 PM > To: Andrew Morton > Cc: Bob Liu; linux...@kvack.org; Bhupesh SHARMA; > laurent.pinch...@ideasonboard.com; uclinux-dist- > de...@blackfin.uclinux.org; linux-media@vger.kernel.org; > dhowe...@redhat.com; ge...@linux-m68k.org; g...@uclinux.org; > sta...@kernel.org; gre...@linuxfoundation.org; Hugh Dickins > Subject: Re: [PATCH] nommu: remap_pfn_range: fix addr parameter check > > > Yes, the MMU version of remap_pfn_range() does permit non-page- > aligned > > `addr' (at least, if the userspace maaping is a non-COW one). But I > > suspect that was an implementation accident - it is a nonsensical > > thing to do, isn't it? The MMU cannot map a bunch of kernel pages > > onto a non-page-aligned userspace address. > > > > So I'm thinking that we should declare ((addr & ~PAGE_MASK) != 0) to > > be a caller bug, and fix up this regrettably unidentified v4l driver? > > I agree. This should be fixed in videobuf. > > Hi sharma, what's your kernel version? It seems videobuf2 already fixed this > bug in 3.5.
Hi Scott, I was using 3.3 linux kernel. I will again check if videobuf2 in 3.5 has already fixed this issue. Regards, Bhupesh -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
