Hi Laurent, If I understood your discussion with Russell [1] correctly, user pointer buffers are required to be page-aligned because of the IOMMU API, and it's desirable to keep the IOMMU driver that way for other subsystems which may use it. So we're stuck with user buffers needing to be page-aligned. There's a check in ispvideo.c:isp_video_buffer_prepare() that the buffer address is 32-byte aligned. Isn't this superfluous considering the page-aligned restriction? -Michael [1] http://www.mail-archive.com/linux-omap%40vger.kernel.org/msg50611.html MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner, Erhard Meier -- 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
