Commit 4d0727b7 authored Feb 13, 2015 by Rajakumar Govindaram Committed by Gerrit - the friendly Code Review server Feb 18, 2015

msm: camera2: cpp: Check IOMMU status before processing frame



The CPP HW can use invalid address if the IOMMU status is
improper. The frame command needs to be issued only if there
is valid IOMMU state.

Change-Id: I74fb7faf25088d76b5e21c9c53eabb7306f2d264
Signed-off-by: Rajakumar Govindaram <rajakuma@codeaurora.org>

parent 7ec67867

drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1736,6 +1736,11 @@ static int msm_cpp_cfg_frame(struct cpp_device *cpp_dev,
		return -EINVAL;
		}

		if (cpp_dev->iommu_state != CPP_IOMMU_STATE_ATTACHED) {
		pr_info("IOMMU is not attached\n");
		return -EAGAIN;
		}

		in_phyaddr = msm_cpp_fetch_buffer_info(cpp_dev,
		&new_frame->input_buffer_info,
		((new_frame->input_buffer_info.identity >> 16) & 0xFFFF),