From: Mark Grosen <mgrosen@ti.com>
Date: Tue, 13 Dec 2011 07:14:15 +0000 (+0200)
Subject: remoteproc: avoid registering a virtio device if not supported
X-Git-Tag: v3.4-rc1~87^2~1^2~11
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7d2d3956fbc1aa9a3ccdc9389b88505232764d4f;p=karo-tx-linux.git

remoteproc: avoid registering a virtio device if not supported

Let remoteproc know when the firmware doesn't support any virtio
functionality, so registering a virtio device can be avoided.

This is needed for remote processors that doesn't require any
virtio-based communications, but are still controlled via remoteproc.

[ohad@wizery.com: write commit log]

Signed-off-by: Mark Grosen <mgrosen@ti.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
---

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 0d9a9552c311..080c0569ef38 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -695,7 +695,7 @@ static int
 rproc_handle_virtio_rsc(struct rproc *rproc, struct fw_resource *rsc, int len)
 {
 	struct device *dev = rproc->dev;
-	int ret = 0;
+	int ret = -ENODEV;
 
 	for (; len >= sizeof(*rsc); rsc++, len -= sizeof(*rsc))
 		if (rsc->type == RSC_VIRTIO_DEV) {