From: Clement Leger cleger@kalray.eu
[ Upstream commit 72f64cabc4bd6985c7355f5547bd3637c82762ac ]
When preparing the subdevice for the vdev, also copy dma_pfn_offset since this is used for sub device dma allocations. Without that, there is incoherency between the parent dma settings and the childs one, potentially leading to dma_alloc_coherent failure (due to phys_to_dma using dma_pfn_offset for translation).
Fixes: 086d08725d34 ("remoteproc: create vdev subdevice with specific dma memory pool") Signed-off-by: Clement Leger cleger@kalray.eu Acked-by: Loic Pallardy loic.pallardy@st.com Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/remoteproc/remoteproc_core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 8b5363223eaa..5031c6806908 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -512,6 +512,7 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc, /* Initialise vdev subdevice */ snprintf(name, sizeof(name), "vdev%dbuffer", rvdev->index); rvdev->dev.parent = rproc->dev.parent; + rvdev->dev.dma_pfn_offset = rproc->dev.parent->dma_pfn_offset; rvdev->dev.release = rproc_rvdev_release; dev_set_name(&rvdev->dev, "%s#%s", dev_name(rvdev->dev.parent), name); dev_set_drvdata(&rvdev->dev, rvdev);