From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pankaj Dubey Subject: [PATCH] of: reserved_mem: set dma_ops for devices using reserved mem Date: Wed, 21 Dec 2016 11:14:31 +0530 Message-ID: <1482299071-22637-1-git-send-email-pankaj.dubey@samsung.com> Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, hans.verkuil-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org, krzk-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, kgene-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, Smitha T Murthy , Pankaj Dubey List-Id: devicetree@vger.kernel.org From: Smitha T Murthy For some IPs, there may be virtual child devices created and for them its necessary to set the dma_ops if it's using reserved memory else it will call the dummy dma_ops during buffer operations for the child devices which will lead to memory mapping failure. Signed-off-by: Smitha T Murthy Signed-off-by: Pankaj Dubey --- drivers/of/of_reserved_mem.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 366d8c3..d507c35 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -354,6 +354,10 @@ int of_reserved_mem_device_init_by_idx(struct device *dev, mutex_lock(&of_rmem_assigned_device_mutex); list_add(&rd->list, &of_rmem_assigned_device_list); mutex_unlock(&of_rmem_assigned_device_mutex); + /* ensure that dma_ops is set for virtual devices + * using reserved memory + */ + of_dma_configure(dev, np); dev_info(dev, "assigned reserved memory node %s\n", rmem->name); } else { -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html