linux-kernel - [PATCH v3 13/20] remoteproc: core: Add vdev support to resource amending function

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Date:   Wed, 12 Oct 2016 18:00:31 +0200
From:   Loic Pallardy <loic.pallardy@...com>
To:     <bjorn.andersson@...aro.org>, <ohad@...ery.com>,
        <lee.jones@...aro.org>
CC:     <loic.pallardy@...com>, <linux-remoteproc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kernel@...inux.com>
Subject: [PATCH v3 13/20] remoteproc: core: Add vdev support to resource amending function

This patch offers the capability to amend existing RSC_VDEV resource
in an existing resource table.

Signed-off-by: Loic Pallardy <loic.pallardy@...com>
---
 drivers/remoteproc/remoteproc_core.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 4297ee7..26fc647 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -985,6 +985,7 @@ static int rproc_update_resource_table_entry(struct rproc *rproc,
 	struct fw_rsc_carveout *tblc, *newc;
 	struct fw_rsc_devmem *tbld, *newd;
 	struct fw_rsc_trace *tblt, *newt;
+	struct fw_rsc_vdev *tblv, *newv;
 	int updated = true;
 	int i;
 
@@ -1029,6 +1030,20 @@ static int rproc_update_resource_table_entry(struct rproc *rproc,
 			memcpy(tblt, newt, request->size);
 
 			return updated;
+		case RSC_VDEV:
+			tblv = rsc;
+			newv = request->resource;
+			if (newv->id != tblv->id)
+				break;
+
+			if (request->size > (sizeof(*tblv) +
+				    tblv->num_of_vrings * sizeof(struct fw_rsc_vdev_vring) +
+				    tblv->config_len))
+				return -ENOSPC;
+
+			memcpy(tblv, newv, request->size);
+
+			return updated;
 		default:
 			dev_err(&rproc->dev,
 				"Unsupported resource type: %d\n",
-- 
1.9.1